Soleiman, Hussain Ali, Ali Kamel Khalafallah, and Hana’a Abd-Ellatif. 2012. “Synthesis and Studies of pyrazolo[3,4-b]pyridin-4-One Derivatives”. European Journal of Chemistry 3 (3):316-21. https://doi.org/10.5155/eurjchem.3.3.316-321.612.