Metsähovi Radio Observatory
Other Publications
2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988
-QUASAR
-SUN
-VLBI
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-INSTRUMENTATION
-MISCELLANEOUS
2003
Koski, M.:
Tarkkojen kellojen vertailujärjestelmän kehittely
Insinöörityö, Helsingin ammattikorkeakoulu Stadia, 2003.
2002
Puhakka, P.:
Kokonaistehoradiometri auringon mikroaaltosäteilyn tutkimuksessa.
Pro gradu -tutkielma, Helsingin yliopisto, Fysiikan suuntautumisvaihtoehto. Toukokuu 2002.
Jussila, I.:
Extragalactic inverted-spectrum radio sources.
Master's Thesis, March 2002.
2001
Harju, J., Liljeström, T.: Odinin tähtitiedeohjelmassa etsitään vettä ja happea..
Avaruusuutiset 2, pp. 12-13, 2001.
Mujunen, A.: The Sustained Disk Streaming Performance of COTS Linux PCs..
http://kurp.hut.fi/vlbi/instr/pwcr.html, 2001.
Ritakari, J.: True off-the-shelf Mark5.
http://kurp.hut.fi/vlbi/instr/, 2001.
Riou, M.: Report of my training course.
16 p, 2001.
Ritakari, J.: Next Generation VLBI Station.
http://kurp-www.hut.fi/vlbi/instr/NextGenDAR.html, 2001
Ritakari, J.: Cost-Effective Next Generation Correlator.
http://kurp-www.hut.fi/vlbi/instr/Correlator.html, 2001.
2000
Ritakari, J.:Concept for Next Generation VLBI
http://kurp-www.hut.fi/vlbi/instr/netgen.html, also available in MIT Haystack Observatory Mark IV Memo Series, as ftp://dopey.haystack. edu/pub/mark4/memos/281.pdf, 2000.
Urpo, S., Arajärvi, M., Herland, E-A., Joensuu, A., Nyberg, M.,
Pulkkinen, T., Vihma-Kaurinkoski, M., Lahtinen, J.:Avaruustutkimuslaitostyöryhmän muistio.
Opetusministeriön työryhmien muistioita, 24:2000, 29 p., 2000.
1999
Brajsa, R., Ruzdjak, V., Vrsnak, B., Wöhl, H., Pohjolainen, S., Urpo, S.:An analysis of the solar rotation velocity determined tracing microwave features and an estimate on their heights.
JOSO Annual Report 1998, 1999.
Grassl, H., Rasool, S.I., Urpo, S.:Scientific Audit of the Space Applications Institute.
Joint Research Centre, Scientific Audit, 1999.
Urpo, S.:Radioliikenteemme havaittavuus lähitähdille.
Tähdet ja Avaruus 4/99, p. 48, 1999.
Arajärvi, M., Ahola, K., Mattila, K., Pellinen, R., Valtonen, M., Hermunen, H., Mursula, K., Tornikoski, M., Vihma-Kaurinkoski, M.:Tähtitieteen suurhankkeet - Työryhmän muistio.
Opetusministeriön työryhmien muistioita, 8:1999, 108 p., 1999.
Bogod, V., Garaimov, V., Grebinskij, A., Urpo, S., Fu, Q.J., Zhang, H.:Pre- and post-flare evolution of AR 8038 on 9-14 May 1998 with Metsähovi-RATAN-600 spectral microwave observations.
Bulletin of Special Astrophysical Observatory 48, pp. 17-24, 1999.
1998
Grebinskij, A., Bogod, V., Gelfreikh, G., Shibasaki, K., Urpo, S., Pohjolainen, S.:Chromospheric magnetic field measurements by a microwave free-free emission polarization, theory and observations.
JOSO Annual Report '97, Polygrafia, Bratislava, pp. 1-3, 1998.
Ragaine, D.:Observations of the Sun in Radio waves and Analysis of data. 33 p., 1998.
URPO, S., LAHTINEN, J.:COSPAR kokoontui Nagoyassa; 32nd COSPAR Scientific Assembly. July 12-19, 1998, Nagoya, Japan,
Avaruusuutiset, 4/98, p. 13, 1998.
PEDERSEN, H., FYNBO, J., VALTAOJA, E., TORNIKOSKI, M., CLASEN, J., PALAZZI, E.:GRB980329 R & I-band observations;
GCN GRB observation report, GCN Circular Nr 52, 1998.
AHOLA, K., LAHTINEN, J., URPO, S. (EDITORS):Space Research in Finland 1996-1997;
COSPAR Finnish National Committee and TEKES Technology Development Centre Finland, 54 p., Helsinki, 1998.
ENGELBERG, J., HANSEN, H., HUHTALA, M., ISOTALO, T., JOKELA, P., KOHO, K., KOHTALA, A., KUMPUMÄKI, T., LEHIKOINEN, P., LEINO, A., LÄNSMAN, P., MATTILA, O., MECKLIN, J., MENTULA, M., OJANEN, P., PARTANEN, K., PASANEN, M., PIKKARAINEN, K., RASILAINEN, H., RUISMÄKI, R., RUOHOMAA, S., SAVOJOKI, J-P., TIKKANEN, M., VAINIKAINEN, P., VARSILA, T., VEPSÄLÄINEN, P., WIKSTRÖM, T.:UMTS frequencies and operating licences in Finland;
The report of national UMTS working group, 30th November 1998.
1997
LÄHTEENMÄKI, A.:Doppler boosting factors and viewing angles for active galactic nuclei.
Proc. Nordic-Baltic graduate student meeting on extragalactic astronomy, Seili, Finland, ed. M. Hanski, Tuorla Observatory Reports Informo No. 179, 1997.
URPO, S., GIBSON, R., FISCHER, H., RINALDINI, C.:Evaluation of the Joint Research Centre 1992-1996.
COM(97)164 final, Office for Official Publications of the European Communities, Brussels, 1997.
1996
ZAITSEV VV, URPO S, STEPANOV A V:Pulsating regimes of energy release in solar flares;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 46-47, 1996.
STEPANOV A V, URPO S, ZAITSEV V V, POHJOLAINEN S:Diagnostics of electric currents in solar flares using microwave emission;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 93-94, 1996.
TORNIKOSKI M:Classification of AGN: Study of southern sources by using advanced statistical methods;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, p 39, 1996.
VALTAOJA E, WIIK K:Quasar observing programs with the Japanese VSOP very long baseline interferometry satellite;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 42-43, 1996.
TERÄSRANTA H:The outburst/quiescent ratio at millimeter wavelengths of AGN;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 40-41, 1996.
MUJUNEN A:Distributing real-time radio astronomy measurements across a network of non-real-time computers;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 99-100, 1996.
WIIK K:A new quasioptical beam switching method for high frequency dual polarization receivers;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 227-228, 1996.
WIIK K:Determining AGN source parameters from two-epoch VLBI- and total flux density monitoring data;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 44-45, 1996.
POHJOLAINEN S:On the occurrence of impulsive X-ray features during solar microwave bursts;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 48-49, 1996.
LÄHTEENMÄKI A:Viewing angles and brightness temperatures for various classes of active galactic nuclei;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, p 98, 1996.
ESKELINEN P, MATOLA M, SALPALA A, ENGELBERG J:GPS-based comparison of H-maser and cesium time-scales;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 107-108, 1996.
KOISTINEN O, KARLAMAA K, PELTONEN J, URPO S:New millimeter wave receivers at Metsähovi Radio Research Station;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 221-222, 1996.
URPO S, LEPPÄNEN K, LILJESTRÖM T:More information about the star formation by a new method developed by Metsähovi scientists (in Finnish), Polysteekki 5/96, p 24, 1996.
DUMPER K, PHILLIPS P, HUGHES N, URPO S:Feasibility study of high spatial resolution radar altimeter - AO3151;
Systems Engineering & Assessment Ltd, Doc. No 96/PD/342, 150 p, 1996.
URPO S, GIBSON R, FISCHER H:Report of the visiting group for the evaluation of the Joint Research Centre's Space Applications Institute, European Commission, in press, 1996.
URPO S:Metsähovi today (in Finnish);
Future of Radio Engineering - in the past and now, Publication in honour of Professor Martti Tiuri on his 70th birthday, editor A. Räisänen, Helsinki University of Technology, Radio Laboratorio, Report S 220, pp 37-46, 1996.
HATTULA J, ARAJÄRVI M, HURTOLA P, IKONEN E, IMMONEN S, MÄKLIN M, PELLINEN R, TANSKANEN P, URPO S, RANTALA J:Avaruustiedestrategiatyöryhmän muistio;
Opetusministeriön työryhmien muistioita, 1996:23, Helsinki, 23 p, 1996.
MÄENPÄÄ M, ARAJÄRVI M, HATTULA J, JÄÄSKELÄINEN J, PELLINEN R, POHJOLA H, SUTELA T, TURUNEN T, VUORIMIES J, VÄLINORO P, FREDRIKSSON H, IMMONEN J, IMMONEN S, JUUTI P, KELHÄ V, KOHTALA A, URPO S, RANTALA J, MÄKLIN M:Avaruusalan tutkimus- ja kehittämistoiminnan kansallinen strategia vuosille 1996-1998;
Avaruusalan neuvottelukunta, Kauppa- ja teollisuusministeriön neuvottelukunta-raportteja 2/1996, Helsinki, 56 p, 1996.
LUNTAMA J, MÄKLIN M, URPO S (editors):Space Research in Finland 1994-1995;
Finnish National Committee of COSPAR, Technology Development Centre (TEKES), 46 p, 1996.
LEPPÄNEN K, LILJESTRÖM T:Evidence for shock-induced star formation from Sub-Milliarcsecond polarization observations of water masers in V51M;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 35-36, 1996.
LILJESTRÖM T, BERGMAN P:Interferometric radio observations of the protostellar disk of Z CMa;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: P. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 37-38, 1996.
LILJESTRÖM T, WINNBERG A, BOOTH R:Discovery of vibrationally excited water masers at 96 GHz towards protostars;
URSI/IEEE/IRC XXI National Convention on Radio Science, 2-3.10.1996, Editors: yyP. Piironen and A. Räisänen, Helsinki University of Technology, Radio Laboratory, Report S222, pp 96-97, 1996.
1995
BRAJSA R, RUZDJAK V, VRSNAK B, POHJOLAINEN S, URPO S:Centre-to-limb functions in optical and radio wavelength ranges;
in M. Saniga (ed.) Joint Organization for Solar Observations, Annual Report 1994, Astronomical Institute, Slovak Academy of Sciences, Tatranska Lomnica, p. 175, 1995.
MUJUNEN A, HIMWICH W, VANDENBERG N:FS9 Computer reference manual, NASA Space Geodesy Program Manual Set;
Volumes 1 & 2, Version 9.0 Supplement, Space Geodesy Project, NASA/Goddard Space Flight Center, 70 p, 1995.
MUJUNEN A, HIMWICH W, VANDENBERG N:FS9 Computer reference appendices, NASA Space Geodesy Program Manual Set;
Volumes 1 & 2, Version 9.0 Supplement, Space Geodesy Project, NASA/Goddard Space Flight Center, 89 p, 1995.
MUJUNEN A:FS Memo: Linux Notes;
Space Geodesy Project, NASA/Goddard Space Flight Center, 96 p, 1995.
URPO S:ISO satellite launched successfully (in Finnish);
Avaruusuutiset, No 6, p 14, 1995.
TORNIKOSKI M:Suomalaistutkijalle havaintoaikaa NASAn Compton-satelliitilta;
Tähdet ja Avaruus, 6/95, 1995.
1994
VALTAOJA E:Preparations for VSOP and Radioastron space VLBI science programs in Metsähovi;
V COSPAR-Meeting of the Finnish Space Scientists, Oulu, Finland, 10-11.1.1994, Oulu University, Department of Physics, Report No 124, pp 18-19, 1994.
SAKURAI T, WOEHL H, BRAJSA R, POHJOLAINEN S, RUZDJAK V, URPO S, VRSNAK B, ICHIMOTO K:Soft X-rays, H-alpha, magnetographic, He 10830 and 37 GHz analysis of the whole Sun;
V COSPAR-Meeting of the Finnish Space Scientists, Oulu, Finland, 10-11.1.1994, Oulu University, Department of Physics, Report No 124, pp 53-54, 1994.
URPO S:Solar research at the Metsähovi radio research station and CORONAS satellite project;
V COSPAR-Meeting of the Finnish Space Scientists, Oulu, Finland, 10-11.1.1994, Oulu University, Department of Physics, Report No 124, p 56, 1994.
TERÄSRANTA H, TORNIKOSKI M, VALTAOJA E:The Metsähovi-Compton co-operation;
V COSPAR-Meeting of the Finnish Space Scientists, Oulu, Finland, 10-11.1.1994, Oulu University, Department of Physics, Report No 124, p 57, 1994.
LUNTAMA J-P, URPO S (editors):Space Research in Finland 1992-1993;
Finnish National Committee of COSPAR, 34 p, 1994.
URPO S:Radio Waves a tool to better measure and understand the Universe;
Polysteekki, Bulletin of the Helsinki University of Technology, 6/94, pp 17-20, 1994.
TERÄSRANTA H:Extragalaktisista radiolähteistä;
Sähkö & Tele, 67, p 38, 1994.
TORNIKOSKI M:Recent results about the variability of active galactic nuclei (in Finnish);
Tähdet ja Avaruus, The Astronomical association Ursa, No 5/94, pp12-15, 1994.
1993
LAINELA M, VALTAOJA E:Structure function analysis of high radio frequency variability in the Metsähovi monitoring sample of AGN;
Proc. XXVII Annual Conference of the Finnish Physical Society, Turku, 1993.
LÄHTEENMÄKI A, VALTAOJA E:Imaging optical polarimetry of radio galaxy hotspots and gravitational lenses with the Nordic Optical Telescope;
Proceedings of the XXVII Annual Conference of the Finnish Physical Society, Turku, 1993.
URPO S:What is inside the Sun? (in Finnish);
Tiede 2000, Vol 13, No 4/93, p 25, 1993.
VALTAOJA E:What is hidden in the center of the Milky Way? (in Finnish);
Tähdet ja Avaruus, The Astronomical Association Ursa, No 6, pp 8-12, 1993.
1992
VALTAOJA E, VALTONEN M (editors):Variability of Blazars;
Cambridge University Press, Cambridge, xvi+465 pages, 1992.
URPO S, VALTAOJA E:Participation in the science programme of the Radioastron-VLBI; Metsähovi and Finnish possibilities (in Finnish);
IV COSPAR-Meeting of the Finnish Space Scientists, Jyväskylä, January 16-17, 1992; Department of Physics, University of Jyväskylä, Laboratory Report 1/1992, p 55, 1992.
VALTAOJA E, URPO S:Science operations, scheduling and support for Radioastron and VSOP space VLBI missions;
IV COSPAR-Meeting of the Finnish Space Scientists, Jyväskylä, January 16-17, 1992; Department of Physics, University of Jyväskylä, Laboratory Report 1/1992, p 58, 1992.
LUNTAMA J-P, URPO S (editors):Space research in Finland 1990-1991;
Finnish National Committee of COSPAR, 33 p, 1992.
VALTAOJA E, TERÄSRANTA H, TORNIKOSKI M, KARLAMAA K, WIREN S, LÄHTEENMÄKI A, LAINELA M, KORPI M, NILSSON K:Complete samples of radio sources and the classification of active galactic nuclei;
Proc. XXVI Annual Conference of the Finnish Physical Society, 19-21.3.1992, Lahti, eds. P Hakonen, M Holmström and A Oja, Helsinki University of Technology, Report TKK-F-A697, 1992.
LAINELA M, VALTAOJA E:Structure functions applied to the Metsähovi sample;
Proc. XXVI Annual Conferece of the Finnish Physical Society, eds. P Hakonen, M Holmström and A Oja, Helsinki University of Technology, Report TKK-F-A697, 1992.
TORNIKOSKI M:Radiowaves from the edge of the Universe (in Finnish);
Tähdet ja Avaruus, The Astronomical Association Ursa, No 6, pp 4-7, 1992.
1992
TERÄSRANTA H, TORNIKOSKI M, VALTAOJA E:Three years of continuum observations with the SEST telescope;
Proceedings of the Finnish Astronomical Society 9-10.5.1991, 1991.
TORNIKOSKI M:Automation of radioastronomical observing programs in Metsähovi;
Proceedings of the Finnish Astronomical Society 9-10.5.1991, 1991.
MAKINO F, KII T, OHASHI T, TERÄSRANTA H:3C 345;
IAU Circular No 5281, 1991.
Space VLBI: plans for science and ground support;
III Meeting of the Finnish Space Researchers, editor Similä-Lehtinen, Tampere University of Technology, Report 2-91, p 33, 1991.
LAINELA M, VALTAOJA E:Properties of shocked relativistic jets;
Proceedings of the XXV Annual Conference of the Finnish Physical Society, editors J Jokisaari and M Leväsalmi;
Department of Physics, University of Oulu Report No 119, p 198, 1991.
VALTAOJA E:The wizard of Tuorla (in Finnish) - Yrjö Väisälä as seen by the press;
In the book Yrjö Väisälä, Wizard of Tuorla, editor A Niemi, p. 59-, 1991.
LAINELA M, VALTAOJA E:Structure functions applied to radio sources;
XVII Convention on Radio Science URSI/IEEE, Åbo, Finland, November 11,1991, Abstracts of Papers, p 38, 1991.
TERÄSRANTA H, VALTAOJA E, TORNIKOSKI M:Eleven years monitoring of extragalactic sources with the Metsähovi radio telescope;
XVII Convention on Radio Science URSI/IEEE, Åbo, Finland, November 11,1991, Abstracts of Papers, pp 35-36, 1991.
TORNIKOSKI M, VALTAOJA E:SEST continuum observations of southern AGN:
XVII Convention on Radio Science URSI/IEEE, Åbo, Finland, November 11, 1991, Abstracts of Papers, p 37, 1991.
1990
URPO S, TERÄSRANTA H, POHJOLAINEN S, TORNIKOSKI M, WIIK K,WÄYRYNEN V:Study of solar radio activity by millimeter waves at the Metsähovi Radio Research Station;
Proceedings of the XXIV Annual Conference of the Finnish Physical Society March 29-31, 1990, Tampere, Finland; Tampere University of Technology Department of Electrical Engineering Physics Report 7-90, p 20:3, 1990.
VALTAOJA E, TERÄSRANTA H:Extreme relativistic motion of the blazar OJ 287;
Proceedings of the XXIV Annual Conference of the Finnish Physical Society March 29-31, 1990, Tampere, Finland; Tampere University of Technology Department of Electrical Engineering Physics Report 7-90, 1990.
TUOVINEN J, URPO S (editors):Space research in Finland 1988-1989;
Finnish National Committee of COSPAR, 27 p, 1990.
URPO S:Analysis of big solar outburst at mm-waves;
Proceedings of the Finnish Astronomical Society 1990, Observatory and Astrophysics Laboratory, University of Helsinki, p 37, 1990.
POHJOLAINEN S, URPO S, TERÄSRANTA H:Solar low temperature areas at mm wavelengths;
Proceedings of the Finnish Astronomical Society 1990, Observatory and Astrophysics Laboratory, University of Helsinki, pp 19-22, 1990.
TERÄSRANTA H, VALTAOJA E:Relativistic boosting efects for extragalactic sources;
Proceedings of the Finnish Astronomical Society 1990, Observatory and Astrophysics Laboratory, University of Helsinki, pp 34-36, 1990.
VALTAOJA E:Finnish Participation in the Radioastron program, Meeting of the Finnish Space Researchers, Department of Physics, University of Oulu, p 73, 1990.
MUINONEN K, KOKKO M, POHJOLAINEN S, HAKALA P (editors):Proceedings of the Finnish Astronomical Society, Helsinki, 1990.
POPOV M, FEJES I, BARTEL N, LINFIELD R, VALTAOJA E, TAYLOR R, MATVEYENKO L, SLYSH V, SOGLASNOV V, GURVITS L, SINITSYN V:Science Objective Committee report to the 10th Radioastron Review Meeting, IKI, May 1990.
1989
KOTILAINEN J, LAINELA M, TERÄSRANTA H, WIREN S:Radio flux measurements of quasars and BL Lacs at Metsähovi;
Proceedings of the XXIII Annual conference of the Finnish Physical Society, March 30 - April 1, 1989, Haikko, University of Helsinki Report Series in Physics HU-P-251, p 9:11, 1989.
VALTAOJA E, VALTAOJA L, EFIMOV YU, SHAKHOVSKOY N M:Photopolarimetry of 3C 273 - a blazar in disguise?;
Proceedings of the XXIII Annual Conference of the Finnish Physical Society, March 30 - April 1, 1989, Haikko;
University of Helsinki, Report Series in Physics HU-P-251, 1 p, 1989.
TERÄSRANTA H, VALTAOJA E, URPO S, LAINILA M, KOTILAINEN J, VALTONEN M:First submillimeter observations of southern extragalactic sources with the SEST-telescope;
Proceedings of the XXIII Annual Conference of the Finnish Physical Society March 30 - April 1, 1989, Haikko Finland; University of Helsinki, Report Series in Physics HU-P-251, p 9:19, 1989.
SCHILIZZI R T.... (71 CO-AUTHORS) ..., VALTAOJA E:A proposal for IVS - International VLBI Satellite;
Report submitted to ESA, November 30, 1989.
1988
TORSTI J, AURELA A, NIEMINEN M, PELTONEN J, VALTONEN E, KELHÄ V, LIEDE I, PELLINEN R, TENHUNEN H, JULIN R, ÄYSTÖ J, URPO S, SAARIKKO H, ASHTON F, OSBORNE J, THOMPSON M, WOLFENDALE A:ERNE - a Finnish-British proposal for SOHO mission XXII Days of Physics, Jyväskylä
24-26.3.1988, 1 p, 1988.
ALINIKULA P:A 37 GHz correlation polarimeter for solar research (in Finnish);
Master's Thesis, Helsinki University of Technology, 55 p, 1988.
URPO S (editor):Space Activities in Finland in 1986 - 1987;
Finnish National Committee of COSPAR, 23 p, 1988.
VALTAOJA E, URPO S:RADIOASTRON: A space VLBI project;
XXII Days of Physics, Jyväskylä 24-26.3.1988, 1 p, 1988.
