Dubei, Olga. “Determination of the Input Parameters of the Work-Stream of the Oil-Gas Ejetor Used Simultaneously With the Sucker-Rod Pump”. Prospecting and Development of Oil and Gas Fields, no. 1(70) (March 29, 2019): 60-69. Accessed June 26, 2019. http://rrngr.nung.edu.ua/index.php/rrngr/article/view/669.