00505naa#a2200169#i#450# EN\\bibl\6608 20251229203848.1 1609-3178 20150901b2015####ek#y0engy0150####ca RUS RU Effective Method of Correction of Acoustic Losses in a Contact Layer at Ultrasonic Flaw Detection Journal article Saint-Petersburg LLC SVEN 2015 1 с. Journal article local Shcherbinskii Viktor zh-szf.ru