| 1 | R. C. Dorf and R. H. Bishop (2008), “Modern Control Systems”, Prentice Hall, New Jersey, USA, ISBN: 0-13-227028-5 |
| 2 | G. F. Franklin, J. D. Powell, A. Emami-Naeini (2006), “Feedback Control of Dynamic Systems”, Prentice Hall, New Jersey, USA, ISBN: 0-13-149930-0 |