Le, D. V., Le, P. T. M., Nguyen, A. T., Doan, S. H., Dinh, K. X., Vu, S. N., & Nguyen, B. H. (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