R. N. Shelke, D. N. Pansare, C. D. Pawar, A. K. Deshmukh, R. P. Pawar, and S. R. Bembalkar, “Synthesis of 3H-imidazo[4,5-b] pyridine with evaluation of their anticancer and antimicrobial activity”, Eur. J. Chem., vol. 8, no. 1, pp. 25–32, Mar. 2017.