Онисько, О. Р., et al. “THEORETICAL BASIS OF TECHNOLOGICAL INABILITY TO PRODUCE THEORETICALLY ACCURATE THREAD PROFILE ON PIPES OF OIL AND GAS ASSORTMENT”. Oil and Gas Power Engineering, no. 1(23), June 2015, pp. 94-99, https://nge.nung.edu.ua/index.php/nge/article/view/340.