@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 },
     year = {1969},
     volume = {_N_S_09},
     number = {23},
     url = {http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a26/}
}