Flexible-link robot arm control by a feedback linearization/singular perturbation approach. - M. W. Vandegrift; Frank L. Lewis; S. Q. Zhu (J. Field Robotics, 1994)

Path planning and control of a mobile base with nonholonomic constraints. - Sarangapani Jagannathan; S. Q. Zhu; Frank L. Lewis (Robotica, 1994)