Prakash G L and  Thejaswini M and  S H Manjula and  K R Venugopal and  L M Patnaik,  Tree-on-DAG for Data Aggregation in Sensor Networks.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2009, vol. 25(1). 95 - 101
    [viewed 05 March 2021]. Available from: