@article{GDZPPN002029472, title = {A combinatorial ranking problem. (Short Communication).}, journal = {Aequationes mathematicae}, volume = {14}, year = {1976}, pages = {245-246}, zbl = {0327.05122}, url = {http://dml.mathdoc.fr/item/GDZPPN002029472} }
Burns, R.N., Haff, C.E. A combinatorial ranking problem. (Short Communication).. Aequationes mathematicae, Tome 14 (1976) pp. 245-246. http://gdmltest.u-ga.fr/item/GDZPPN002029472/