Mkhaiber, A. M., and A. F. Abdulameer. “Structural and Morphological Investigation of Bulk Heterojunction Blend (NiPc/C60) Thin Films under Heat Treatment”. Iraqi Journal of Science, Vol. 59, no. 4A, Oct. 2018, pp. 1847-5, https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/380.