Thuan, Phan Van, Ta Tram Anh, Le Canh Trung, Nguyen Tien Dung, Luong Thi Yen Nga, Dinh Xuan Khoa, Le Van Doai, Nguyen Huy Bang, and Nguyen Van Ai. “Controlling Optical Bistability in a Five-Level Cascade EIT Medium”. Communications in Physics 26, no. 1 (July 18, 2016): 33. Accessed March 29, 2024. https://vjs.ac.vn/index.php/cip/article/view/8213.