К.А. Poliarush, Yu.І. Doroshenko Ya.V. Doroshenko, L.D. Pylypiv,. 2018. «The Study of the Stress-Strain State of Trunk Gas Pipeline Sections With Defects in the Shape of the Cross-Section of the Pipe». JOURNAL OF HYDROCARBON POWER ENGINEERING 4 (2):68-79. https://ogpe.nung.edu.ua/index.php/jhpe/article/view/71.