@article{AM2_1972__8_136313,
     author = {W.D. Wallis},
     title = {On the {Existence} of {Room} {Squares.} {(Short} {Communications).}},
     journal = {Aequationes mathematicae},
     pages = {315--316},
     publisher = {mathdoc},
     volume = {8},
     year = {1972},
     url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136313/}
}