1. GENOPT—a program that writes user-friendly optimization code
2. Bushnell, D. "SPHERE - Program for minimum weight design of isogrid-stiffened spherical shells under uniform external pressure", LMSC Report F372046, Lockheed Missiles and Space Company,January15,1990
3. Jacoby, Jeffrey, "FAST optimization of static axisymmetric shell structures", PhD thesis,Dept.ofAppliedMechanics,StanfordUniversity,1992.