@article{1102968824, author = {Goldberg, Myron and Moon, J. W.}, title = {Cycles in $k$-strong tournaments.}, journal = {Pacific J. Math.}, volume = {43}, number = {3}, year = {1972}, pages = { 89-96}, language = {en}, url = {http://dml.mathdoc.fr/item/1102968824} }
Goldberg, Myron; Moon, J. W. Cycles in $k$-strong tournaments.. Pacific J. Math., Tome 43 (1972) no. 3, pp. 89-96. http://gdmltest.u-ga.fr/item/1102968824/