Dao, Vu, 		Thuy, Tran, 		Dung, Truong, AND 		Quyen, Nguyen.
" Investigation of Ber Performances in Chaotic-Secured Optical Fiber Communication Systems using the 4-PAM Modulation Scheme" <em>Journal of Science and Technology: Issue on Information and Communications Technology</em> [Online], Volume 19 Number 6.2 (29 June 2021)