00487naa#a2200169#i#450# EN\\bibl\28245 20241117004705.7 1609-3178 20190403b2019####ek#y0engy0150####ca RU Acoustic Inspection Methods of Turbine Blades of Gas-Turbine Engines Journal article Saint-Petersburg LLC SVEN 2019 8 с. Journal article local Pyankov Valery A. Pyankov Ivan N. naukaru.ru