WASET
    Prakash Chand and  Anurag Gaur and  Ashavani Kumar,  Effect of Cr and Fe Doping on the Structural and Optical Properties of ZnO Nanostructures.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2014, vol. 96(12). 1321 - 1324
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/9999828.