Angie Harrelson: Patterns - Literature, Arts, and Science. Prufrock Press Inc., 2007, ISBN 978-1-59363-261-8 (englisch, google.com).
Ronald J. Gould: Mathematics in Games, Sports, and Gambling: The Games People Play, Second Edition. CRC Press, 2015, ISBN 978-1-4987-1953-7 (englisch, google.com).
Thomas S. Ferguson: A Course in Game Theory. World Scientific, New Jersey London Singapore Beijing Shanghai Hong Kong Taipei Chennai Tokyo 2020, ISBN 978-981-3227-37-8, S.9 (eingeschränkte Vorschau in der Google-Buchsuche): „The SOS Game. (From the 28th Annual USA Mathematical Olympiad, 1999) The board consists of a row of n squares, initially empty. Players take turns selecting an empty square and writing either an S or an O in it. The player who first succeeds in completing SOS in consecutive squares wins the game. If the whole board gets filled up without an SOS appearing consecutively anywhere, the game is a draw.“
slideme.org
SoS Game. In: SlideME. Abgerufen am 4. Dezember 2016.
