2017
Shamin - Fuzzy Logic and Soft Calculations
    https://www.youtube.com/watch?v=feDPuYm5Xzs

2015
Piegat - Fuzzy Modelling and Control 3rd ed ru
    1AEBE87A693749B67574A2540B1DD875
    102155227B4287D51614F6B3DA8F2F27

2011
Uhobotov - Selected Chapters of Fuzzy Set Theory
    http://www.lib.csu.ru/texts/UhobotovVI.pdf

2008
Ryzhov - Fuzzy Set Theory and Applications
    http://www.intsys.msu.ru/staff/ryzhov/FuzzySetsTheory&Applications.pdf