H. Aoudia and  Y. Touati and  E. H. Teguig and  A. Ali Cherif,  Hybrid Hierarchical Routing Protocol for WSN Lifetime Maximization.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2014, vol. 94(10). 1959 - 1964
    [viewed 29 February 2020]. Available from: https://publications.waset.org/pdf/10004818.