Martin Rees: "Black Hole Models for Active Galactic Nuclei", Annual review of astronomy and astrophysics. Volume 22. Palo Alto, CA, Annual Reviews, Inc., 1984, p. 471-506 http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ARA%26A..22..471R&link_type=ARTICLE&db_key=AST.
Andrew Hamilton's "Falling into a black hole", http://origins.Colorado.EDU/~ajsh/schw.shtml.
Last update: 2001-07-23 / mtt