Khumsri, Akkharadet, Khatcharin Wetchakun, Kittichai Sopunna, Sert Kiennork, Ronariddh Nakhowong, and Pakawat Wongwanwattana. 2021. “Synthesis and Enhanced Power Factor of La and Ag Co-Doped SrTiO3 Bulk Material”. Research on Modern Science and Utilizing Technological Innovation Journal (RMUTI Journal) 14 (3):45-60. https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/244814.