Thumsa-ard, T. “Highly Ordered Titania Nanotube Arrays Synthesized via One-Faced and Single-Step Anodization”. Journal of Materials Science and Applied Energy, vol. 8, no. 1, Apr. 2019, pp. 379-88, https://ph01.tci-thaijo.org/index.php/jmsae_ceae/article/view/159324.