1. Astrom, K. and T. Hagglund: PID controllers: theory, design, and tuning, Instrument Society of America, North Carolina (1995)
2. Bar-Cohen,Y.: Biomimetics-Biologically Inspired Technologies, CRC Press, Taylor & Francis Group, Boca Raton:FL, pp.399–425 (2006)
3. Batalov S.A, M. Lazarevic,A.Hace, K. Jezernik,A Chattering-free Fractional PDa Sliding-mode Control of a 3-DOF Robot System Driven by DC motors, 5’th FDA2012, pp.77,Nanjing, China,May 20, (2012)
4. Bernstein,A.:The Coordination and Regulation of Movements,Oxford Perg., 77–92 (1961)
5. Cajić,M. Lazarević,M.,and T.Latinović: Equations of motion of robotic system with piezo-modified viscoelastic and magnetorheological elements of fractional order,S.7.1,GAMM2013,Novi Sad,Serbia,(2013)