@article{KYB_1982__18_3_a4,
     author = {Bek, Roman and Pokorn\'y, Zden\v{e}k and R\r{u}\v{z}i\v{c}ka, Milan},
     title = {Principal concepts of systems fuzzification. {Fuzzification} of systems for technical and medical practice. {I}},
     journal = {Kybernetika},
     pages = {234--246},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1982},
     mrnumber = {680157},
     zbl = {0494.94020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1982__18_3_a4/}
}