On Separating Two Simple Polygons by a Single Translation. G. Toussaint — 1989 Discrete & computational geometry
Computing the Link Center of a Simple Polygon. R. Pollack; M. Sharir; W. Lenhart; J. Sack; R. Seidel; S. Suri; G. Toussaint; S. Whitesides; C. Yap — 1988 Discrete & computational geometry