Chankeaw, Y., R. Manosak, and T. Mongkhonsi. “The effects of HNO3 and CH3COOH on the aqueous phase hydroxylation of benzene to phenol by hydrogen peroxide over TS-1 catalyst”. Engineering and Applied Science Research, vol. 41, no. 4, Jan. 2015, pp. 421-6, https://ph01.tci-thaijo.org/index.php/easr/article/view/28292.