@article{1200757525, author = {Nobusawa, Nobuo}, title = {On symmetric structure of a finite set}, journal = {Osaka J. Math.}, volume = {11}, number = {1}, year = {1974}, pages = { 569-575}, language = {en}, url = {http://dml.mathdoc.fr/item/1200757525} }
Nobusawa, Nobuo. On symmetric structure of a finite set. Osaka J. Math., Tome 11 (1974) no. 1, pp. 569-575. http://gdmltest.u-ga.fr/item/1200757525/