Category: CMUTR
Institution: Carnegie Mellon University, School of Computer
        Science
Number: CMU-CS-91-175
Bibtype: TechReport
Author: William Welch and Michael Gleicher and Andrew Witkin
Month: sep
Title: Manipulating Surfaces Differentially
Year: 1991
Key: Interaction techniques, computational geometry and object
        modeling, computer aided design, surface modeling
Address: Pittsburgh, PA