Choudhury, T., and S. Bhattacharyya. “FABRICATION AND CHARACTERIZATION OF Al DOPED ZnO THIN FILM BY PVD TECHNIQUE”. Journal of Advanced Scientific Research, Vol. 11, no. 01 Suppl 1, Mar. 2020, pp. 403-5, https://sciensage.info/index.php/JASR/article/view/462.