Le, Doai Van, Phuong Thi Minh Le, Anh Tuan Nguyen, Son Hoai Doan, Khoa Xuan Dinh, Sau Ngoc Vu, and Bang Huy Nguyen. 2018. “A Comparative Study of Optical Bistability in Three-Level EIT Configurations”. Communications in Physics 28 (2):127. https://doi.org/10.15625/0868-3166/28/2/12541.