Горбійчук, М. І., and В. М. Медведчук. “METHOD FOR PARAMETER IDENTIFICATION OF TECHNICAL STATE OF TWO STAGE CENTRIFUGAL NATURAL GAS PUMP”. Oil and Gas Power Engineering, no. 1(23), June 2015, pp. 78-85, https://nge.nung.edu.ua/index.php/nge/article/view/338.