참고문헌
- Herbert E. Merritt, 'Hydraulic Control Systems,' John Wiley & Sons., 1967
- John Watton, 'Fluid Power Systems,' Prentice Hall, 1989
- HIAB-FOCO., 'Digi Drive Remote Control,' 1988
- Blackbum J. E., Reethof G. & Shearer J. L., 'Fluid Power Control,' M. I. T Press., 1960
- 윤영표. 'Pressure Control Characteristics of an Elec-tro-Hydraulic Proportional Compound Valve,' KAIST. M.S.Thesis, 1982