S. A. Mohammed, J. Al-Zanganawee, and O. A. Muwaffaq. 2023. “The Effect of Double Doping With Copper and Tin on the Structural and Optical Properties of Nickel Oxide Nanoparticles Prepared by Sol-Gel Method”. Academic Science Journal 1 (4):149-68. https://doi.org/10.24237/ASJ.01.04.687C.