J. Khan1, S. Mahboob2, M. A.T. Abdel-Reheem3, R. Ullah5, I. Hussain6, and S. Haider7, “Synthesis and Characterization of Zinc Oxide Nanoparticles by Modified Sol-Gel Method”, ajc, vol. 26, no. 20, pp. 7069–7070, Sep. 2014.