@article{JIS_2015__18_8_a6,
     author = {Ethier, S.N. and Lee, Jiyeon},
     title = {Counting toroidal binary arrays. {II.}},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {18},
     number = {8},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2015__18_8_a6/}
}