Moustafa Osman Mohammed,  Engineering Topology of Photonic Systems for Sustainable Molecular Structure: Autopoiesis Systems.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2021, vol. 180(12). 297 - 311
    [viewed 17 April 2024]. Available from: https://publications.waset.org/pdf/10012381.