@article{ASUO_2002_X_2_a3,
     author = {I. Cristea },
     title = {Complete {Hypergroups,} {1-Hypergroups} and {Fuzzy} {Sets}},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {X},
     number = {2},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2002_X_2_a3/}
}