1. Merritt, H. E. Hydraulic Control Systems. 6, (John Wiley & Sons, 1967).
2. Jelali, M. & Kroll, A. Hydraulic Servo-systems: Modelling, Identification and Control. (Springer Science & Business Media, 2012).
3. Valentine, R. Motor Control Electronics Handbook. (McGraw-Hill Companies,Incorporated, 1998).
4. Krishnan, R. Electric Motor Drives: Modeling, Analysis, and Control. (Prentice Hall, 2001).
5. King, A. M., Loiselle, D. S. & Kohl, P. Force generation for locomotion of vertebrates: Skeletal muscle overview. IEEE J. Ocean. Eng. 29, 684–691 (2004).