Hi,
the chapter "Bibliography" in PostgreSQL docs contains links to http://s2k-ftp.cs.berkeley.edu:8000/postgres/papers/
but they use:
http://db.cs.berkeley.edu/papers/
Karel
-- Karel Zak <zakkr(at)zf(dot)jcu(dot)cz> http://home.zf.jcu.cz/~zakkr/