@article{CMUC_1994__35_1_a13,
     author = {Yajima, Yukinobu},
     title = {Rectangular covers of products missing diagonals},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {147--153},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1994},
     mrnumber = {1292590},
     zbl = {0804.54010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1994__35_1_a13/}
}