Nocedal, Jorge; Wright, Stephen J. (2006). Numerical Optimization. Springer Series in Operations Research and Financial Engineering (second ed.). Springer. doi:10.1007/978-0-387-40065-5. ISBN978-0-387-30303-1.
Du, Qiang; Wang, Desheng (2005), "The Optimal Centroidal Voronoi Tessellations and the Gersho's Conjecture in the Three-Dimensional Space", Computers and Mathematics with Applications, 49 (9–10): 1355–1373, doi:10.1016/j.camwa.2004.12.008