1984 ,no. 1-2. Fuzzy sets and systems : an international journal. Amsterdam : North-Holland, 1984. 3 zv. trikrát za rok [Copy count : 1, currently available 0, at library only 1]

1984 ,no. 1-3. Fuzzy sets and systems : an international journal. Amsterdam : North-Holland, 1984. 3 zv. trikrát za rok [Copy count : 1, currently available 0, at library only 1]