@article{10_37236_694,
     author = {Wen An Liu and Haifeng Li and Bei Li},
     title = {A restricted version of {Wythoff's} game},
     journal = {The electronic journal of combinatorics},
     year = {2011},
     volume = {18},
     number = {1},
     doi = {10.37236/694},
     zbl = {1233.91057},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/694/}
}