Phuong, D.T.T., Minh, N.V. and Dung, C.T. 2013. Structural and Optical Properties of Samples SrTi\(_{1-x}\)M\(_{x}\)O\(_3\) (M = Co, Ni) Synthesized by Sol-gel Method. Communications in Physics. 23, 3 (Dec. 2013), 263. DOI:https://doi.org/10.15625/0868-3166/23/3/3373.