P. Deohate, Pradip, et al. “Comparison of Molar Refraction and Polarizability Constants of Substituted Benzo-(4,5-D)-2-Arylimino-7-Aryl Alkylimino-1,3,6-Thiadiazepines in Different Percentages of Solvents ”. Asian Journal of Chemistry, vol. 15, no. 3, Mar. 2010, pp. 1425-8, https://asianpubs.org/index.php/ajchem/article/view/21820.