Philosopher's Football

Phutball
Provides information on the network Philosopher's Football server, including rules and notation.
http://www.gamerz.net/pbmserv/phutball.html

Phutball
Contains instructions for a play-by-email server.
http://www.gamerz.net/~pbmserv/phutball.html

Phutball - Wikipedia
Explains the origins, rules, and strategy of the game.
http://en.wikipedia.org/wiki/Phutball

Princeton MathClub - Philosopher's Football
Contains information on the Princeton Math Club's league, including a formula for ratings.
http://cgi.math.princeton.edu/mathclub/index.php/Philosopher's_Football

Sensei's Library: Philosopher's Football
Provides information on the rules, strategy, and notation of the game.
http://senseis.xmp.net/?PhilosophersFootball