Chi, Do Thuy, Bui Huy, Nguyen Thuy Van, and Pham Van Hoi. “Investigation of 1d Photonic Crystal Based on Nano-Porous Silicon Multilayer for Optical Filtering”. Communications in Physics 21, no. 1 (June 25, 2011): 89. Accessed April 24, 2024. https://vjs.ac.vn/index.php/cip/article/view/101.