1. Li Jianqi, The use of energy-saving measures of the hydraulic excavator, Construction machinery. 5, (2001) 29-35(In Chinese).
2. Zuo Xiaoqing, The development of energy-efficient technologies of hydraulic excavators description , Machine Tool & Hydraulics. 37 (2009) 248-250(In Chinese).
3. Su Zhenxing, Load-sensing control technology on the excavator, Construction mechanization. 33 (2009) (In Chinese).
4. Björn Eriksson. Division of Fluid and Mechatronic Systems Department of Management and Engineering [D]. Linköpings University, Sweden. (2010).
5. Daniel Gunnarsson & Emanuel Strid. Implementation of a Pump Control System for a Wheel Loader Application[D]. Linköpings University, Sweden (2007).