@article{Kazakov2018analytical,
author={Kazakov, Y.F. and Ivanov, V.A.},
title={ANALYTICAL ESTIMATION OF THE TECHNICAL CONDITION OF PLUNGER PAIR  WHEN COMPLETED BY HYDRODENSITY},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2018},
pages={138-142},
volume={13},
issue={1},
}