APA (7th ed.) Citation

Barbosa, R., Tenreiro Machado, J. A., & Ferreira, I. M. (2003). A fractional calculus perspective of PID tuning.

Chicago Style (17th ed.) Citation

Barbosa, Ramiro, J. A. Tenreiro Machado, and Isabel M. Ferreira. A Fractional Calculus Perspective of PID Tuning. 2003.

MLA (8th ed.) Citation

Barbosa, Ramiro, et al. A Fractional Calculus Perspective of PID Tuning. 2003.