@article{JIS_2014__17_7_a6,
     author = {Khovanova,  Tanya and Xiong,  Joshua},
     title = {Nim fractals},
     journal = {Journal of integer sequences},
     year = {2014},
     volume = {17},
     number = {7},
     zbl = {1295.91023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2014__17_7_a6/}
}