1. Aichholzer O., Aurenhammer F., Chen D.Z., Lee D.T., Mukhopadhyay A. and Papadopoulou E. Voronoi Diagrams for Direction-Sensitive Distances, in Proc. 13th Symposium on Computational Geometry, ACM Press, New York, 1997
2. Lecture Notes in Computer Science;R. Klein,1989
3. Nishida T. and Sugihara K. FEM-Like Fast Marching Method for the Computation of the Boat–Sail Distance and the Associated Voronoi Diagram, Technical Reports, METR 2003-45, Dept. Math. Informatics, The University of Tokyo, 2003.
4. Okabe A., Boots B. and Sugihara K. Spatial Tessellation: Concepts and Applications of Voronoi Diagrams, Wiley, New York, 1992