1. Alt, N., Wolff, K. and van den Eijkel, P. (1999). Idle comfort of passenger cars. SAE Paper No. 1999-01-1805.
2. Butts, K., Sivashankar, N. and Sun, J. (1995). Feedforward and feedback design for engine idle speed control using l1 optimization. Proc. American Control Conf., 2587–2590.
3. Butts, K. R., Sivashankar, N. and Sun, J. (1999). Application of l1 optimal control to the engine idle speed control problem. IEEE Trans. Control Systems Technology 7, 2, 258–270.
4. Carnevale, C. and Moschetti, A. (1993). Idle speed control with H-infinity technique. SAE Paper No. 930770.
5. Chen, L., Tang, C. and Liu, Z. (2011). Study on robust control for engine idle speed based on structured singular value µ-theory. Measuring Technology and Mechatronics Automation (ICMTMA), 2011 3rd Int. Conf., 514–517.