W. R. C. Underhill
- Large displacement Lagrangian mechanics -Part I - Theory. In: Structural Engineering and Mechanics, v. 4, n. 1 (January 1996). (1996):
- Large displacement Lagrangian mechanics -Part II - Equilibrium principles. In: Structural Engineering and Mechanics, v. 4, n. 1 (January 1996). (1996):