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3. Ermolov, I.N. and Lange, Yu.V., Nerazrushayshchii kontrol’. Spravochnik v 7-mi tomakh (Nondestructive Testing. Handbook in 7 Volumes.), Klyuev, V.V., Ed., vol. 3: Ultrasonic Testing, Moscow: Mashinostroenie, 2004.
4. Ermolov, I.N., Kontrol’ ul’trazvukom (kratkii spravochnik) (Ultrasonic Testing. Brief Handbook), Moscow: NPO TsNIITMASh, 1992.
5. Ermolov, I.N., Vopilkin, A.Kh., and Badalyan, V.G., Raschety v ul’trazvukovoi defektoskopii (kratkii spravochnik) (Calculations in Ultrasonic Flaw Detection. Brief Handbook), Moscow: EKhO+, 2000.