Drawing Ruled Surfaces Using the Dual De Boor Algorithm. - Rena Ding (CATS, 2002)

The Dual Drawing Method of the Hyperbolic Paraboloid and the Screen Representation of the Ruling. - Rena Ding; Yan Zhang (CISST, 2003)

Dual Space Drawing Methods of Cylinders. - Rena Ding (ICCSA (1), 2003)

Dual space drawing methods for cones. - Rena Ding; Yan Zhang 003 (GRAPHITE, 2004)