Ngoc Anh, Tran Thi, 		Thi Ha, Tran, 		Viet Tuyen, Nguyen, AND 		Nguyen Hai, Pham.
" Characteristics of Ag-Doped ZnO Thin Films Prepared by Sputtering Method" <em>VNU Journal of Science: Mathematics - Physics</em> [Online], Volume 35 Number 4 (18 December 2019)