@article{10_4153_CMB_1969_063_6,
     author = {Mullin, R. C. and Nemeth, E.},
     title = {An {Existence} {Theorem} for {Room} {Squares*}},
     journal = {Canadian mathematical bulletin},
     pages = {493--497},
     year = {1969},
     volume = {12},
     number = {4},
     doi = {10.4153/CMB-1969-063-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-063-6/}
}