Stationary of the strain energy density in anisotropic solidsMajak, Jüri; Pohlak, MeelisWorld journal of engineering2011 / p. 765-766 https://www.sciencedirect.com/science/article/abs/pii/S0020768303003718

Stationary of the strain energy density in anisotropic solidsMajak, Jüri; Pohlak, Meelis8th World Congress on Structural and Multidisciplinary Optimization2009 / ? p