WASET
    Alexey P. Antropov and  Alexander V. Ragutkin and  Nicolay A. Yashtulov,  Micropower Composite Nanomaterials Based on Porous Silicon for Renewable Energy Sources.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2016, vol. 120(12). 1445 - 1448
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/10005822.