@article{1200685626, author = {Utumi, Yuzo}, title = {On hypergroups of group right cosets}, journal = {Osaka Math. J.}, volume = {1}, number = {1}, year = {1949}, pages = { 73-80}, language = {en}, url = {http://dml.mathdoc.fr/item/1200685626} }
Utumi, Yuzo. On hypergroups of group right cosets. Osaka Math. J., Tome 1 (1949) no. 1, pp. 73-80. http://gdmltest.u-ga.fr/item/1200685626/