@article{GDZPPN002028824,
title = {The existence of Room squares.},
journal = {Aequationes mathematicae},
volume = {13},
year = {1975},
pages = {1-8},
zbl = {0315.05014},
url = {http://dml.mathdoc.fr/item/GDZPPN002028824}
}
Mullin, R.C.; Wallis, W.D. The existence of Room squares.. Aequationes mathematicae, Tome 13 (1975) pp. 1-8. http://gdmltest.u-ga.fr/item/GDZPPN002028824/