@article{KYB_1992__28_Suppl_a17,
     author = {Bodjanova, Slavka},
     title = {Hard and fuzzy classification within the framework of hierarchical and optimization clustering},
     journal = {Kybernetika},
     pages = {81--84},
     publisher = {mathdoc},
     volume = {28},
     number = {Suppl},
     year = {1992},
     mrnumber = {1226057},
     zbl = {0862.68095},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1992__28_Suppl_a17/}
}