Grudz, Ya. V., R. B. Stasyuk, and M. Ya. Krill. “Research on Energy Efficiency of Operation of City Gas Networks”. Oil and Gas Power Engineering, no. 2(32) (August 31, 2020): 29–34. Accessed May 19, 2024. https://nge.nung.edu.ua/index.php/nge/article/view/496.