1. Studies in Mathematics and Its Applications;P.G. Ciarlet,1988
2. Reddy, J.N.: Energy Principles and Variational Methods in Applied Mechanics. Wiley, New Jersey (2002)
3. Brigadnov, I.A.: On the existence of a limit load in some problems of hyperelasticity. Izv. Akad. Nauk. Mekh. Tverd. Tela (Mech. Solids) 5, 46–51 (1993)
4. Brigadnov, I.A.: Discontinuous solutions and their finite element approximation in non-linear elasticity. In: Van Keer, R., Verhegghe, B., Hogge, M., Noldus, E. (eds.) Advanced Computational Methods in Engineering’98, pp. 141–148. Shaker, Maastricht (1998)
5. Brigadnov, I.A.: Limit analysis method in elastostatics and electrostatics. Math. Methods Appl. Sci. 28, 253–273 (2005)