Ojha, K.G., Neha Mathur, Mahveer Kawadiya, and M. Tanwar. “Synthesis of 1,2,4-Trihalophenothiazin-3-Ones and Their Conversion into (1,4)-Benzothiazino-(2,3-B)-Phenothiazines”. Asian Journal of Chemistry 7, no. 1 (March 30, 2010): 123–126. Accessed July 24, 2024. https://asianpubs.org/index.php/ajchem/article/view/24231.