Kim Chung, V., T. Minh Duy, and N. Huu Chi. “PREPARATION OF THIN FILM TIO, BY SPUTTER-ION-PLATING”. Science and Technology Development Journal, Vol. 2, no. 8, Aug. 1999, pp. 30-36, doi:https://doi.org/10.32508/stdj.v2i8.3668.