1. Nikravesh, P.E. and Park, T., “Dynamic Analysis and Design System Computer Program for Planar Motion (Modular-DADS-2D),” Center for Computer Aided Design, The University of Iowa, 1983.
2. Nikravesh, P.E. and Kwon, O.K., “Dynamic Analysis and Design System Computer Program for Spatial Motion (Modular-DADS-3D),” Center for Computer Aided Design, The University of Iowa, 1983.