1. Lim, J. W., and Chopra, I. "Aeroelastic Optimization of A Helicopter Rotor," Proceedings of the 44th AHS Forum, WashingtonD.C., June 1988.
2. Lim, J. W. "Aeroelastic Optimization of A Helicopter Rotor," Ph.D. Thesis,University of Maryland, College Park, 1988
3. Ganguli, R. "Aeroelastic Optimization of Advanced Geometry and Composite Helicopter Rotors," Ph.D. Thesis,UniversityofMaryland, College Park, 1994.
4. Ganguli, R., and Chopra, I. "Aeroelastic Optimization of An Advanced Geometry Composite Helicopter Rotor," Proceedings of the 51st AHS Forum, Fort Worth, TX, May9-11 1995, pp.965-984.