@article{GDZPPN002026635, title = {On the Existence of Room Squares. (Short Communications).}, journal = {Aequationes mathematicae}, volume = {8}, year = {1972}, pages = {315-316}, url = {http://dml.mathdoc.fr/item/GDZPPN002026635} }
Wallis, W.D. On the Existence of Room Squares. (Short Communications).. Aequationes mathematicae, Tome 8 (1972) pp. 315-316. http://gdmltest.u-ga.fr/item/GDZPPN002026635/