David Lewis' mirror cell optimization program Plop can be found at http://www.davidlewistoronto.com/plop/
David Lewis' star test simulation program gui_star can be found at
http://www.davidlewistoronto.com/star_test/register_gui.html
Plop keywords: finite element analysis, FEA, flotation, support, deformation, mirror cell
gui_star keywords: star test, diffraction pattern, Foucault simulation