Yadav K, Yadav S, Dubey PK. Metrological investigation and calibration of reference standard block for ultrasonic non-destructive testing. mms [Internet]. 2022 Sep. 30 [cited 2026 Oct. 16];29(3):525-38. Available from: https://wydawnictwo.pan.pl/index.php/mms/article/view/5182