+}
+
+@article{rossi2012exact,
+ title={An exact approach for maximizing the lifetime of sensor networks with adjustable sensing ranges},
+ author={Rossi, Andr{\'e} and Singh, Alok and Sevaux, Marc},
+ journal={Computers \& Operations Research},
+ volume={39},
+ number={12},
+ pages={3166--3176},
+ year={2012},
+ publisher={Elsevier}
+}
+
+ @inproceedings{chenait2013distributed,
+ title={Distributed and stable energy-efficient scheduling algorithm for coverage in wireless sensor networks},
+ author={Chenait, Manel and Zebbane, Bahia and Belbezza, Hamza and Balli, Hakim and Badache, Nadjib},
+ booktitle={Wireless Communications and Mobile Computing Conference (IWCMC), 2013 9th International},
+ pages={418--423},
+ year={2013},
+ organization={IEEE}
+}
+
+@inproceedings{yangnovel,
+ title={A Novel Distributed Algorithm for Complete Targets Coverage in Energy Harvesting Wireless Sensor Networks },
+ author={Yang, Changlin and Chin, Kwan-Wu},
+ booktitle={IEEE ICC 2014- Ad-hoc and Sensor Networking Symposium},
+ pages={361--366},
+ year={2014},
+ organization={IEEE}
+}
+
+
+
+
+
