Lumpol, V., M. Aiempanakit, J. Sritharathikhun, and C. Suwanchawalit. “Morphological Parameter of Nanotube TiO2 Thin Films via Anodization Method”. Rajamangala University of Technology Srivijaya Research Journal, vol. 12, no. 2, July 2020, pp. 181-95, https://li01.tci-thaijo.org/index.php/rmutsvrj/article/view/245417.