1. 3Helmut, G. H. and Lawrence Jr., W. R.“Dynamic stability of a parachute point-mass load system”, Report FDL-TDR64-126, Department of Aeronautics and Engineering Mechanics, University of Minnesota, Minneapolis, Minnesota, 1965.
2. 4Hume, R. “A Two dimensional Mathematical Model of a Parachute in Steady Descent”, Technical Report 1260, Aeronautical Research Council, 1973.
3. 5Abdulkadir, L. “Stability of Multibody Systems for Mars Descent and Landing”, MSc Thesis,Delft University of Technology, 2011.