Olimova, M., and B. Elmuradov. “About the Direction of Selective Alkylation and Cyanoethylation of Benzimidazoles, Benzothiazoles and Benzopyrimidines”. Journal of Basic and Applied Research in Biomedicine, vol. 2, no. 4, Mar. 2022, pp. 455-9, https://jbarbiomed.com/index.php/home/article/view/114.