Козак, Федір Васильович, et al. “IMPROVEMENT OF BRAKING PROCESS AT CYCLES OF DRILLING PIPES COLUMN DESCENT”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 2(38), Feb. 2019, pp. 284-91, https://pvntsh.nung.edu.ua/index.php/number/article/view/54.