Analysis of kinematic singularities for robot manipulators in Cartesian coordinate parameters. - Shaheen Ahmad; Shengwu Luo (ICRA, 1988)

Coordinated motion control of multiple robotic devices for welding and redundancy coordination through constrained optimization in Cartesian space. - Shaheen Ahmad; Shengwu Luo (IEEE Trans. Robotics Autom., 1989)

Measure of joint path drift for kinematically redundant robots. - Shengwu Luo; Shaheen Ahmad (ICRA, 1991)

Predicting the drift motion for kinematically redundant robots. - Shengwu Luo; Shaheen Ahmad (IEEE Trans. Syst. Man Cybern., 1992)

Adaptive control of redundant multiple robots in cooperative motion. - Mohamed Zribi; Shaheen Ahmad; Shengwu Luo (J. Intell. Robotic Syst., 1996)