Tanakulrungsank, W., Tienkaew, S. and Praserthdam, P. (2002) “The Effect of Silica Added on Large Surface Area Of Nanocrystalline Titania”, Frontiers in Engineering Innovation Research, 2, pp. 84–89. available at: https://ph01.tci-thaijo.org/index.php/jermutt/article/view/242378 (accessed: 2 September 2026).