David E. Fox Kenneth I. Joy On Polyhedral Approximations to a Sphere. 426-432 1998 conf/cgi/1998 Computer Graphics International https://doi.org/10.1109/CGI.1998.694296 https://doi.ieeecomputersociety.org/10.1109/CGI.1998.694296 db/conf/cgi/cgi1998.html#FoxJ98