Iman Zangeneh and  Mostafa Moradi and  Ali Mokhtarbaf,  The Comparison of Data Replication in Distributed Systems.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2011, vol. 59(11). 1183 - 1185
    [viewed 25 January 2020]. Available from: https://publications.waset.org/pdf/13487.