ГРУДЗ, Ярослав Володимирович. OUTPUT-INPUT RATIO OF TECHNICAL SYSTEMS AND GAS PIPELINES. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, [S. l.], n. 1(25), p. 158–170, 2019. Disponível em: https://www.pvntsh.nung.edu.ua/index.php/number/article/view/213. Acesso em: 20 dec. 2025.