@article{10_37236_2015,
     author = {Aviezri S. Fraenkel},
     title = {Aperiodic subtraction games},
     journal = {The electronic journal of combinatorics},
     year = {2011},
     volume = {18},
     number = {2},
     doi = {10.37236/2015},
     zbl = {1237.91061},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2015/}
}