Kaczynski, Roman, Oleksiyvasyliev ., and Ievgen Vasyliev. 2018. “The Fracture Process of the Mortar Pump’s Work Surfaces With Abrasive Particles”. International Journal of Engineering & Technology 7 (3.2): 154-59. https://doi.org/10.14419/ijet.v7i3.2.14394.