Issue No. 02 - March (1995 vol. 15)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/38.365006
Although many algorithms compute Voronoi diagrams for polygons, few do so for shapes bounded by arbitrary closed curves. This algorithm does. It also traces the diagrams directly from their differential properties.
J. J. Chou, "Voronoi Diagrams for Planar Shapes," in IEEE Computer Graphics and Applications, vol. 15, no. , pp. 52-59, 1995.