Biswajit Biswas,  Potential of Energy Conservation of Daylight Linked Lighting System in India.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2014, vol. 89(5). 351 - 354
    [viewed 27 October 2021]. Available from: https://publications.waset.org/pdf/9999381.