Halm, D. ., P. . Badel, and A. . Dragon. “Computational Issues and Applications for 3D Anisotropie Damage Modelling: Coupling Effects of Damage and Frictional Sliding”. European Journal of Computational Mechanics, vol. 10, no. 2-4, Aug. 2001, pp. 243-58, https://journals.riverpublishers.com/index.php/EJCM/article/view/2743.