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@article{PIM_1969_N_S_09_23_a26, author = {R. Daci\'c}, title = {Some {Remarques} {On} {Hypergroups}}, journal = {Publications de l'Institut Math\'ematique}, pages = {183 }, publisher = {mathdoc}, volume = {_N_S_09}, number = {23}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a26/} }
R. Dacić. Some Remarques On Hypergroups. Publications de l'Institut Mathématique, _N_S_09 (1969) no. 23, p. 183 . http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a26/