Лютак ІЗ, Бедзір АО, Лютак ЗП, Мандра АА. Mathematical model of distribution of ultrasonic waves directed into the pipeline with welded joints. mpky [Internet]. 2012 Mar. 1 [cited 2024 May 16];(1(28):41-5. Available from: https://mpky.nung.edu.ua/index.php/mpky/article/view/8