Teori︠i︡a invariantnosti v sistemakh avtomaticheskogo upravleni︠i︡a : trudy Vtorogo Vseso︠i︡uznogo soveshchani︠i︡a, sosto︠i︡avshegos︠i︡a v Kieve 29 ma︠i︡a--1 ︠i︡un︠i︡a 1962 goda - Kulebakin, Viktor Sergeevich, 1891-1970; Petrov, Boris Nikolaevich, 1913- (Izd-vo "Nauka", 1964)