@article{05242343, title = {Some hardness results for question/answer games.}, journal = {Integers}, volume = {7}, year = {2007}, zbl = {1194.68125}, language = {en}, url = {http://dml.mathdoc.fr/item/05242343} }
Abbasi, Sarmad; Sheikh, Numan. Some hardness results for question/answer games.. Integers, Tome 7 (2007) . http://gdmltest.u-ga.fr/item/05242343/