1. (1) Parsons, J.S. and Goodson, R.E., Shaping of Axisymmetric Bodies for Minimum Drag in Incompressible Flow, J. Hydronautics, Vol.8, No.3 (1974).
2. (2) Zedan, M.F., Potential Flow Around Axisymmetric Bodies, Direct and Inverse Problem, Ph. D. Dissertation, University of Houston, (1979).
3. (3) Pinebrook, W.E., Drag Minimization on a Body of Revolution, Dissertation in the University of Houston, (1982).
4. Drag Reduction and Shape Optimization of Airship Bodies
5. (5) Lutz, Th. and Wagner, S., Numerical Shape Optimization of Natural Laminar Flow Bodies, ICAS-98-2, Vol.9, No.4 (1998).