Shneine, J.K., Mahmood, S.M.A. and Shihab, M.S. (2009) “THEORETICAL STUDY OF CONCERTED DIELS-ALDER REACTIONS BETWEEN DIMETHYL 1,2,4,5-TETRAZINE-3,6-DICARBOXYLATE AND DIENOPHILES”, Al-Nahrain Journal of Science, 12(1), pp. 14–23. Available at: https://anjs.edu.iq/index.php/anjs/article/view/1257 (Accessed: 18 October 2026).