Pashynskyi, V. and Boyko, I. 2021. Development of quality control and structure parameters determination methods for large size products from sintered hard alloys WC-(Co+Ni+Cr) based on analysis of the ultrasonic oscillations spreading parameters. Technology audit and production reserves. 4, 2(60) (Jul. 2021), 33–38. DOI:https://doi.org/10.15587/2706-5448.2021.237447.