At Smart Geoemtry 2011, the Responsive Acoustic Surfaces group began an investigation into the sound scattering properties of doubly ruled surfaces. Annotated link http://www.diigo.com/bookmark/http://smartgeometry.org/index.php?option=com_community
Nick Teanby's software page: creates evenly spaced points on sphere; An icosahedron based method for even binning of globally distributed remote sensing data
A library of good packings, coverings and maximal volume arrangements of points on the sphere in 3 dimensions having icosahedral symmetry. The number of points ranges from 60 to 78032