Nguyen Bang Giang, and Tran Anh Tuan. “ASSESSMENT OF THE VACUUM LEVEL ON THE QUALITY OF MULTI-LAYERED ANTIREFLECTIVE THIN FILMS USING SiO2/SiO FOR OBJECTIVE OF NIGHT VISION EQUIPMENT”. UTEHY Journal of Applied Science and Technology, Vol. 31, Mar. 2022, pp. 46-52, http://tapchi.utehy.edu.vn/index.php/jst/article/view/476.