An explanation of swiss system by the US chess Center, Washington D.C. Diplomarbeit: Ein MacMahon-Losungsprogramm für Go-Turniere unter Benutzung von Maximum Weight Perfect Matching by Christoph Gerlach A thesis about Mac-Mahon system and Edmonds algorithm. A bible, if you understand computers, mathematics and German. Toyota European Go Tour rules The documentation of GoDraw, Geoff Kaniuk's program Full of practical advices (schedule, chairs, tables, ...)