1. D. Bliss, D. Wachspress, and T. Quakenbush, A New Methodology for Helicopter Free Wake Analysis, in 39th Annual Forum of the American Helicopter Society, May 1983.
2. J. Bridgeman, R. Strawn, F. Caradonna, and C. S. Chen, Advanced Rotor Computations with a Corrected Potential Method, in 45th Annual Forum of the American Helicopter Society, May 1989.
3. F. X. Caradona, Application of Transonic Flow Analysis to Helicopter Rotor Problems, in Unsteady Transonic Aerodynamics, D. Nixon, ed., AIAA, 1989, pp. 263–285.
4. L. Dadone, R. C. Derham, B. K. Oh, B. Panda, L. A. Shultz, and F. J. Tarzanin, Interdisciplinary Analysis for Advanced Rotors — Approach, Capabilities and Status, in American Helicopter Society Aeromechanics Specialists Conference, January 1994.
5. P. Gill, W. Murray, M. Saunders, AND M. Wright, User's Guide for NPSOL (Version l.0): A Fortran Package for Nonlinear Programming, Tech. Rep. Stanford University Technical Report SOL 86-2, Department of Operations Research, Stanford University, 1986.