@article{KYB_1992_28_Suppl_a1,
     author = {Kramosil, Ivan},
     title = {From an alternative model of rough sets to fuzzy sets},
     journal = {Kybernetika},
     pages = {12--16},
     year = {1992},
     volume = {28},
     number = {Suppl},
     mrnumber = {1226043},
     zbl = {0875.04009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1992_28_Suppl_a1/}
}