Pyalchenkov, Vladimir Alekseevich, Dmitry Vladimirovich Pyalchenkov, y Lybov Ivanovna Nikitina. «Influence of Test Modes and Accuracy of Manufacturing a Roller Cone Bit on Loading of Its Elements». Amazonia Investiga 8, no. 23 (octubre 11, 2019): 613–620. Accedido julio 3, 2024. https://amazoniainvestiga.info/index.php/amazonia/article/view/909.