Does the lit-only restriction make any difference for the sigma-game and sigma:::+:::-game?

John L. Goldwasser, Xinmao Wang, Yaokun Wu. Does the lit-only restriction make any difference for the sigma-game and sigma:::+:::-game?. Eur. J. Comb., 30(4):774-787, 2009. [doi]

Abstract

Abstract is missing.