M. T. Hussein, “Theoretical IR spectroscopic study of Copper Phthalocyanine (CuPc)”, NUCEJ, vol. 11, no. 2, pp. 303–306, Mar. 2008, Accessed: Apr. 12, 2025. [Online]. Available: https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/524