00599naa#a2200205#i#450# EN\\bibl\6096 20260208095250.7 1992-5980 20150630b2015####ek#y0engy0150####ca RUS RU The estimation of fuzzy boundary of multioperational machine tool life Journal article rostov on don Don state technical University 2015 8 с. Journal article local SHuchyev Konstantin Terekhov Dmitriy Izyumov Andrey Tugengold Andrey zh-szf.ru