2. Appa, Kari, Finite-Surface Spline, Journal of Aircraft, Vol. 26, No. 5, May 1989. pp.495-496

3. Chen, P. C., and Liu, D. D. (1985). A Harmonic Gradient Method for Unsteady Supersonic Flow Calculations. J. Aircraft, Vol. 22, pp. 371-379.

4. Giesing, J. P., Kalman, T. P., and Rodden, W. P. (1971). Subsonic Unsteady Aerodynamics for General Configurations; Part I, Vol. I - Direct Application of the Nonplanar Doublet‑Lattice Method. Air Force Flight Dynamics Laboratory Report No. AFFDL‑TR‑71‑5, Part I, Vol. I.

5. Giesing, J. P., Kalman, T., and Rodden, W. P. (1972a). Subsonic Unsteady Aerodynamics for General Configurations, Part II, Volume I - Application of the Doublet‑Lattice‑Method and the Method of Images to Lifting‑Surface/Body Interference. Air Force Flight Dynamics Laboratory Report No. AFFDL‑TR‑71‑5, Part II, Vol. I.

6. Giesing, J. P., Kalman, T. P., and Rodden, W. P. (1972b). Subsonic Unsteady Aerodynamics for General Configurations; Part II, Volume II - Computer Program N5KA. Air Force Flight Dynamics Laboratory Report No. AFFDL‑TR‑71‑5, Part II, Vol. II.

7. Giesing, J. P., Kalman, T. P., and Rodden, W. P. (1972c). Subsonic Steady and Oscillatory Aerodynamics for Multiple Interfering Wings and Bodies. J. Aircraft, Vol. 9, pp. 693-702.

8. Hough, G.R., “Remarks on Vortex-Lattice Methods”, J. Aircraft, Vol. 10, No. 5, 1973, pp. 314-317.

9. Hough, G.R., “Lattice Arrangement for Rapid Convergence”, Vortex-Lattice Utilization, NASA SP-405, May 17-18, 1976, pp. 325-342.

10. Liu, D. D., James, D. K., Chen, P. C., and Pototzky, A. S. (1991). Further Studies of Harmonic Gradient Method for Supersonic Aeroelastic Applications. J. Aircraft, Vol. 28, pp. 598-605.

11. Rodden, W. P., Giesing, J. P., and Kalman, T. P. (1972). Refinement of the Nonplanar Aspects of the Subsonic Doublet‑Lattice Lifting Surface Method. J. Aircraft, Vol. 9, pp. 69-73.

12. Rodden, W.P., and Johnson, E. H., (1994). MSC/NASTRAN Aeroelastic Analysis User’s Guide. The MacNeal-Schwendler Corporation.

13. Rodden, W. P., and Revell, J. D. (1962). The Status of Unsteady Aerodynamic Influence Coefficients. Institute of the Aeronautical Sciences, Fairchild Fund Paper No. FF‑33.

14. Rubbert, P. E., “Theoretical Characteristics of Arbitrary Wings by a Non‑Planar Vortex Lattice Method,” D6-9244, 1964, The Boeing Co., Renton, WA.

15. Anon, “MSC.Nastran Quick Reference Guide 2001”, MSC.Software Corporation, 2001.