00441naa#a2200157#i#450# EN\\bibl\30330 20260108142145.4 1609-3178 20190827b2019####ek#y0engy0150####ca RU Modern Equipment for Ultrasonic Inspection of Welded Joints Journal article Saint-Petersburg LLC SVEN 2019 4 с. Journal article local Efimov Ivan M. zh-szf.ru