“Synthesis and Characterization of Oxazepine and Oxazepane from Reaction of 2-(2- Amino - Ethylimino)-5,5- Diethyl-Pyrimidine-4,6- Dione and 2-[2-(5,5- Diethyl -4,6 - Dioxo - Pyrimidine -2- Ylideneamino) - Ethylimino] -5,5- Diethyl-Dihydro- Pyrimidine - 4”,. Al-Nahrain Journal of Science, vol. 9, no. 2, Sept. 2018, pp. 7-17, https://anjs.edu.iq/index.php/anjs/article/view/1651.