WASET
    Minsoo Lee and  Julee Choi and  Sookyung Song,  A Materialized View Approach to Support Aggregation Operations over Long Periods in Sensor Networks.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2008, vol. 20(8). 2775 - 2779
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/197.