Jin Myoung Kim and  Tae Ho Cho,  Adaptive Hierarchical Key Structure Generation for Key Management in Wireless Sensor Networks using A*.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2008, vol. 14(2). 291 - 295
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/6428.