Yatsyshyn, T. M. “The Choice of Criteria for Environmental Risks Management System During Oil and Gas Wells Construction”. Prospecting and Development of Oil and Gas Fields0, no. 2(67) (May 18, 2018): 31-40. Accessed August 23, 2019. http://rrngr.nung.edu.ua/index.php/rrngr/article/view/294.