@ARTICLE{YanWan08,
  AUTHOR =       {Yi Yang and Xinran Wang and Sencun Zhu and Guohong Cao},
  TITLE =        {SDAP: A Secure Hop-by-Hop Data Aggregation Protocol for Sensor Networks},
  JOURNAL =      {ACM Transactions on Information and System Security(TISSEC)},
  YEAR =         {2008},
  volume =       {11},
  number =       {4},
  month =        {July}
}