The game of <i>n</i>-times nim.

Peter Frankl Norihide Tokushige The game of <i>n</i>-times nim. 205-209 2003 260 Discrete Mathematics 1-3 http://dx.doi.org/10.1016/S0012-365X(02)00667-2 db/journals/dm/dm260.html#FranklT03