00520naa#a2200169#i#450# EN\\bibl\39641 20250418014218.5 1609-3178 20201002b2020####ek#y0engy0150####ca RU Crack Visualization and Dimensioning by Shadow Method at Refining Ultrasonic Inspection Journal article Saint-Petersburg LLC SVEN 2020 2 с. Journal article local Markov Anatoliy Arkadievich Mosyagin Vladimir V. zh-szf.ru