1. ”Modeling of Digital-Displacement Pump-Motors and Their Application as Hydraulic Drives for Nonuniform Loads.”
Md.Ehsan, W.H.S. Rampen, S.H.Salter
Journal of Dynamic Systems, Measurement and Control, March 2000, Vol.122
2.”Research, Design, Calculations Analyzing The Effectiveness Of An Intake Compensator For A Piston Mud Pump.”
M.Ya.Itkis, O.A.Sotnikov
Chemical and Petroleum Enginering, Vol.31, 1995
3. ”Hydraulic valve controls movement.”
Bruce Wiebusch
Design News, 2001
4.”Limit-Analysis Of Thick Axi-Symmetric Vessels.”
A.Zavelani Rossi, L.Binda
Winner Annual Meeting of the American Society of Mechanical Engineers, 1976
5. “Sources of Semiconductor Wafer Contamination.”
John A.Lange
Semiconductor international, April, 1983