WASET
    A. A. Abaker Omer and  H. B. Mohamed Balh and  W. Liu and  A. Abas and  J. Yu and  S. Li and  W. Ma and  W. El Kolaly and  Y. Y. Ahmed Abuker,  Nano-Texturing of Single Crystalline Silicon via Cu-Catalyzed Chemical Etching.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2020, vol. 157(1). 49 - 54
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10011029.