Мандрик ЯІ. IVANO-FRANKIVSK NATIONAL TECHNICAL UNIVERSITY OF OIL AND GAS – 50 YEARS. Number [Internet]. 2019 Feb. 12 [cited 2025 Apr. 8];(2(38):301-20. Available from: https://pvntsh.nung.edu.ua/index.php/number/article/view/56