@ARTICLE{a2013,
     Title={A survey on energy efficient routing in wireless sensor networks},
     Author={Singh, Satvir and Srivastva, Meenaxi},
     Journal={International Journal of Advanced Research In Computer Science and Software Engineering},
     Volume={3},
     Number={7},
     Pages={184--189},
     Publisher={IJARCSSE},
     Year={2013}
}