Tung, Do Xuan, Pham Chi Vinh, and Nguyen Kim Tung. “Homogenization of an Interface Highly Oscillating Between Two Concentric Ellipses”. Vietnam Journal of Mechanics 34, no. 2 (May 30, 2012): 113–121. Accessed November 27, 2021. https://vjs.ac.vn/index.php/vjmech/article/view/926.