The intersection of two ruled surfaces. - Hee-Seok Heo; Myung-Soo Kim; Gershon Elber (Comput. Aided Des., 1999)

The Intersection of Two Ringed Surfaces. - Hee-Seok Heo; Sung Je Hong; Myung-Soo Kim; Gershon Elber (PG, 2000)

The Convex Hull of Rational Plane Curves. - Gershon Elber; Myung-Soo Kim; Hee-Seok Heo (Graph. Model., 2001)

The Intersection of Two Ringed Surfaces and Some Related Problems. - Hee-Seok Heo; Sung Je Hong; Joon-Kyung Seong; Myung-Soo Kim; Gershon Elber (Graph. Model., 2001)