H. Lipkin

The Elliptic Polarity of Screws

Joseph Duffy, H. Lipkin, H. Lipkin, 1985 .

Invariant Kinestatic Filtering

J. Duffy, H. Lipkin, 1987 .

Hybrid Twist and Wrench Control for a Robotic Manipulator

Joseph Duffy, H. Lipkin, H. Lipkin, 1988 .