[1]
“Synthesis and Characterization of Heterocyclic Seven Membered Rings from 2,3-Pyridine caroboxylic anhydride”, IHJPAS, vol. 29, no. 2, pp. 421–436, Mar. 2017, Accessed: May 03, 2024. [Online]. Available: https://jih.uobaghdad.edu.iq/index.php/j/article/view/139