@article{AMBP_1996__3_2_67_0, author = {De Salvo, Mario and Freni, Domenico and Lo Faro, Giovanni}, title = {On the hypergroups with four proper pairs and without scalars}, journal = {Annales math\'ematiques Blaise Pascal}, volume = {S3}, year = {1996}, pages = {67-109}, mrnumber = {1435317}, zbl = {0869.20049}, language = {en}, url = {http://dml.mathdoc.fr/item/AMBP_1996__3_2_67_0} }
De Salvo, Mario; Freni, Domenico; Lo Faro, Giovanni. On the hypergroups with four proper pairs and without scalars. Annales mathématiques Blaise Pascal, Tome S3 (1996) pp. 67-109. http://gdmltest.u-ga.fr/item/AMBP_1996__3_2_67_0/
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