DISTEFANO, J. J., STUBBERUD, A. R., & WILLIAMS, I. J. (1990). Theory and problems of feedback and control systems: Continuous (analog) and discrete (digital).-- ed.2. McGraw-Hill.

DISTEFANO, Joseph J., Allen R. STUBBERUD, and Ivan J. WILLIAMS. Theory and Problems of Feedback and Control Systems: Continuous (analog) and Discrete (digital).-- Ed.2. New York: McGraw-Hill, 1990.

DISTEFANO, Joseph J., et al. Theory and Problems of Feedback and Control Systems: Continuous (analog) and Discrete (digital).-- Ed.2. McGraw-Hill, 1990.