1. Rukovodyashchii dokument. Kotly parovye i vodogreinye. Truboprovody para i goryachei vody, sosudy. Svarnye soedineniya. Kontrol’, kachestva. Ul’trazvukovoi kontrol’. Osnovnye polozheniya. RD 34.17.302-97 (OP 501TsD-97) (Guidance Document. Vapor and Hot-Water Boilers. Vapor and Hot-Water Pipelines. Vessels. Welded Joints. Quality Control. Ultrasonic Testing. Main Regulations), Moscow, 1997.
2. Ushakov, V.M. and Mikhalev, V.V., Some Aspects of Using Piezoelectric Probes for Ultrasonic Inspection of Thin Welded Joints, Rus. J. Nondestr. Test., 2007, no. 3, pp. 204–209.
3. Ermolov, I.N. and Lange, Yu.V., Nerazrushayushchii kontrol’. Ul’trazvukovoi kontrol’. Spravochnik (Nondestructive Testing. Ultrasonic Testing. A Handbook), Moscow: Mashinostroenie, 2004, vol. 3.
4. Ermolov, I.N., Vopilkin, A.Kh., and Badalyan, V.G., Raschety v ul’trazvukovoi defektoskopii (kratkii spravochnik) (Calculations in Ultrasonic Flaw Detection. A Quick-Reference Book), Moscow: NPTs NK “EKhO+”, 2000.
5. Ermolov, I.N., Kontrol’ ul’trazvukom (kratkii spravochnik) (Ultrasonic Testing (A Quick-Reference Book)), Moscow: NPO TsNIITMASh, 1992.