A Z M, S. C., S. Rahman M, B. M M H, and Y. L. “?REAGENTS FOR NEW HETEROANNELATION REACTIONS: AZA REAGENTS”. Biological Sciences - PJSIR, vol. 43, no. 4, June 2000, pp. 201-4, http://v2.pjsir.org/index.php/biological-sciences/article/view/2032.