For citations:
Lobanova I.S., Kalinichenko A.N., Kalinichenko N.P., Kamysheva E.N. Possibility of using non-metallic check samples to assess the performance of penetrant materials and the sensitivity of penetrant testing. Measurement Standards. Reference Materials. 2017;13(1):37-42. (In Russ.) https://doi.org/10.20915/2077-1177-2017-12-1-37-42

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