Jiantao Weng and  Yujie Zhao,  Measurement and Evaluation of Outdoor Lighting Environment at Night in Residential Community in China: A Case Study of Hangzhou.   journal   = {International Journal of Architectural and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2019, vol. 152(8). 438 - 442
    [viewed 12 December 2019]. Available from: https://publications.waset.org/pdf/10010651.