%0 Journal Article %A I. V. Germashev %A V. E. Derbisher %T Properties of unimodal membership functions in operations with fuzzy sets %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2007 %P 77-80 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2007_3_a10/ %G ru %F IVM_2007_3_a10