@article{1102991984, author = {Hildebrant, John A.}, title = {On uniquely divisible semigroups on the two-cell.}, journal = {Pacific J. Math.}, volume = {23}, number = {3}, year = {1967}, pages = { 91-95}, language = {en}, url = {http://dml.mathdoc.fr/item/1102991984} }
Hildebrant, John A. On uniquely divisible semigroups on the two-cell.. Pacific J. Math., Tome 23 (1967) no. 3, pp. 91-95. http://gdmltest.u-ga.fr/item/1102991984/