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+ YEAR = {2006},
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+ title={Handbook of sensor networks: algorithms and architectures},
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+ volume={49},
+ year={2005},
+ publisher={John Wiley \& Sons}
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+ booktitle={ICN 2014, The Thirteenth International Conference on Networks},
+ pages={49--54},
+ year={2014}
+}
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+@article{ref160,
+ title={Transforming Area Coverage to Target Coverage to Maintain Coverage and Connectivity for Wireless Sensor Networks},
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+ volume={2012},
+ year={2012},
+ publisher={Hindawi Publishing Corporation}