Wahab J. Al-Hamdany, Abdul, Abdul Majeed M. Dabbagh, and Omar A. Shareef. 2012. “Synthesis of Spiropyrrolidines via 1, 3 Anionic Cycloaddition”. Rafidain Journal of Science 23 (5):94-105. https://doi.org/10.33899/rjs.2012.59999.