Ashok Kumar and  Vinod Kumar,  Fuzzy Logic Based Improved Range Free Localization for Wireless Sensor Networks.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2013, vol. 77(5). 497 - 505
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/3992.