Hassaneen, H.M., N.M. Abunada, O.A. Miqdad, and A.A. Fares. “Synthesis of Some New 1,3-Disubstituted-4,9-Dithia-1,2,6-triazaspiro[4,4]nonan-2-Ene-7- One: Site Selectivity in Reactions of Nitrilimines With Polyfunctional Dipolarophile”. Asian Journal of Chemistry 24, no. 1 (September 30, 2011): 330–334. Accessed July 1, 2024. https://asianpubs.org/index.php/ajchem/article/view/16014.