1. Migun N.P., Gnusin N.B., Heat exposure at the capillary non-destructive testing (Nauka, Minsk 2011).
2. The NDT methods under high temperature service environment
3. ISO 3452-3–1998 International standard Non-destructive testing. Penetrant testing. Part 3: Reference test blocks (ITD).
4. William J.M., Test piece for inspection penetrant performance assessment and comparison US Patent 6729175 B2 (2004).
5. Vicki F. J., Shimizu S., ASurface penetrant inspection test piece having varying thickness platingUS Patent 4610157 (1986).