Hanieh Tarbiat Khosrowshahi and  Mojtaba Shakeri,  Relay Node Placement for Connectivity Restoration in Wireless Sensor Networks Using Genetic Algorithms.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2018, vol. 135(3). 161 - 170
    [viewed 20 November 2019]. Available from: https://publications.waset.org/pdf/10008613.