Selim, Nahed Mohamed, Mohammed Helmy Arief, and Mohammed H Ahmed. “Synthesis of Some Heterocyclic Compounds Based on (2, 3-Dioxo-2, 3-Dihydro-1H-Indol-1-Yl) Acetyl Acetic Acid Derivatives”. International Journal of Basic and Applied Sciences 2, no. 2 (April 2, 2013): 153–159. Accessed July 25, 2024. https://sciencepubco.com/index.php/ijbas/article/view/721.