Hanh, V. T. M., L. H. Chau, V. L. Dong, and P. D. Chinh. “Estimates for the Elastic Moduli of 2D Aggregate of Hexagonal-Shape Orthorhombic Crystals With in-Plane Random Crystalline Orientations”. Vietnam Journal of Mechanics, vol. 41, no. 2, June 2019, pp. 171-7, doi:10.15625/0866-7136/13183.