Хлопенко, Н.Я., and И.Н. Сидорика. 2014. “ The Operability of the Thrust Bearing Multistage Centrifugal Pump at Unbalance of the Shaft”. Problems of Tribology 70 (4):68-71. https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/184.