1. Argyris, J. H., Recent Advances in Matrix Methods of Structural Analysis, Progress in Aeronautical Sciences, Vol. 4, London, New York, 1963.
2. Argyris, J. H., Kelsey, S., and Kamel, H., Matrix Methods of Structural Analysis. A precis of recent, developments. Paper presented at the 14th meeting of the Structures and Materials Panel AGARD. Paris, July 1962. AGARDograph 72, Ed. deVeubeke, London, New York, 1963, 1?164.
3. Turner, M. J., Martin, H. C., and Weikel, R. C., Further Development and Applications of the Stiffness Method. Paper presented at the 14th meeting of the Structures and Materials Panel, AGARD, Paris, July 1962. AGARDograph 72. Ed. deVeubeke, London, New York, 1963.
4. Turner, M. J., Dill, E. H., Martin, H. C. and Melosh, R. M., J. Aero/Space Sci., 27 (1960) p. 97?106.
5. Argyris, J. H., Aircraft Engrg. 26, 1954, p. 137, 383; 27, 1955, p. 42, 80, 125, 145. See also Energy Theorems and Structural Analysis, Butterworths, London, 1960.