Lerssongkram, N., Pinitsoontorn, S. and Keawprak, N. (2017) “Synthesis and thermoelectric properties of Ca3Co4O9 prepared by sol-gel method using ova”, Asia-Pacific Journal of Science and Technology, 16(1), pp. 11–19. available at: https://so01.tci-thaijo.org/index.php/APST/article/view/83163 (accessed: 27 April 2025).