Berezhnytskyi, B. S., and M. S. Vorobyov. 2018. “KINEMATICS OF A ROLLER CONE BIT WITH A DIRECT FACET TOOTH: Array”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 2(46) (December):210-17. https://doi.org/10.31471/2304-7399-2018-2(46)-210-217.