+
+@book{ref154,
+ title={Wireless Ad Hoc and Sensor Networks: Theory and Applications},
+ author={Xiang-Yang Li},
+ year={September, 2008},
+ publisher={Cambridge University Press}
+}
+
+@book{ref155,
+ title={Wireless networking},
+ author={Anurag Kumar, D. Manjunath and Joy Kuri},
+ year={2008},
+ publisher={Morgan Kaufmann Publishers}
+}
+
+@inproceedings{ref156,
+ author = {F. Pedraza and A. L. Medaglia and A. Garcia},
+ title = {Efficient coverage algorithms for wireless sensor networks},
+ booktitle = {Proceedings of the 2006 Systems and Information Engineering Design Symposium},
+ pages = {78-83},
+ YEAR = {2006},
+}
+
+@book{ref157,
+ title={Handbook of sensor networks: algorithms and architectures},
+ author={Stojmenovic, Ivan},
+ volume={49},
+ year={2005},
+ publisher={John Wiley \& Sons}
+}
+
+@ARTICLE{ref158,
+author = {A. Varga},
+title = {OMNeT++ Discrete Event Simulation System},
+journal = {Available: http://www.omnetpp.org},
+year = {2003},
+}
+
+@inproceedings{ref159,
+ title={Coverage and Lifetime Optimization in Heterogeneous Energy Wireless Sensor Networks},
+ author={Idrees, Ali Kadhum and Deschinkel, Karine and Salomon, Michel and Couturier, Rapha{\"e}l},
+ booktitle={ICN 2014, The Thirteenth International Conference on Networks},
+ pages={49--54},
+ year={2014}
+}
+
+@article{ref160,
+ title={Transforming Area Coverage to Target Coverage to Maintain Coverage and Connectivity for Wireless Sensor Networks},
+ author={Deng, Xiu and Yu, Jiguo and Yu, Dongxiao and Chen, Congcong},
+ journal={International Journal of Distributed Sensor Networks},
+ volume={2012},
+ year={2012},
+ publisher={Hindawi Publishing Corporation}
+}
+
+@inproceedings{ref161,
+ title={Algorithms for node clustering in wireless sensor networks: A survey},
+ author={Kumarawadu, Priyantha and Dechene, Dan J and Luccini, Marco and Sauer, Allan},
+ booktitle={Information and Automation for Sustainability, 2008. ICIAFS 2008. 4th International Conference on},
+ pages={295--300},
+ year={2008},
+ organization={IEEE}
+}
+
+@ARTICLE{glpk,
+author = {Andrew Makhorin},
+title = {The GLPK (GNU Linear Programming Kit)},
+journal = {Available: https://www.gnu.org/software/glpk/},
+year = {2012},
+}
+
+@techreport{Idrees2,
+ author = {Idrees, Ali Kadhum and Deschinkel, Karine and Salomon, Michel and Couturier, Rapha{\"e}l},
+ institution = {University of Franche-Comte - FEMTO-ST Institute, DISC Research Department},
+ title = {Distributed Lifetime Coverage Optimization Protocol in Wireless Sensor Networks},
+ number = {DISC2014-X},
+ month = {Octobre},
+ year = {2014}
+}
+
+@article{0031-9155-44-1-012,
+ author={Eva K Lee and Richard J Gallagher and David Silvern and Cheng-Shie Wuu and Marco Zaider},
+ title={Treatment planning for brachytherapy: an integer programming model, two computational approaches and experiments with permanent prostate implant planning},
+ journal={Physics in Medicine and Biology},
+ volume={44},
+ number={1},
+ pages={145},
+ url={http://stacks.iop.org/0031-9155/44/i=1/a=012},
+ year={1999}
+}
+
+@BOOK{AMPL,
+ AUTHOR = "Robert Fourer and David M. Gay and Brian W. Kernighan",
+ TITLE = "AMPL: A Modeling Language for Mathematical Programming",
+ PUBLISHER = "Cengage Learning",
+ YEAR = "November 12, 2002",
+ edition = "2nd",
+
+}
+
+
+@inproceedings{ref162,
+ title={Maximizing the functional lifetime of sensor networks},
+ author={Giridhar, Arvind and Kumar, PR},
+ booktitle={Proceedings of the 4th international symposium on Information processing in sensor networks},
+ pages={2},
+ year={2005},
+ organization={IEEE Press}
+}
+
+@inproceedings{ref163,
+ title={Using mobile relays to prolong the lifetime of wireless sensor networks},
+ author={Wang, Wei and Srinivasan, Vikram and Chua, Kee-Chaing},
+ booktitle={Proceedings of the 11th annual international conference on Mobile computing and networking},
+ pages={270--283},
+ year={2005},
+ organization={ACM}
+}
+
+@article{ref164,
+ title={Investigating a wireless sensor network optimal lifetime solution for linear topologies},
+ author={Hellman, Keith and Colagrosso, Michael},
+ journal={Journal of Interconnection Networks},
+ volume={7},
+ number={01},
+ pages={91--99},
+ year={2006},
+ publisher={World Scientific}
+}
+
+
+@article{ref165,
+ title={Scheduling sleeping nodes in high density cluster-based sensor networks},
+ author={Deng, Jing and Han, Yunghsiang S and Heinzelman, Wendi B and Varshney, Pramod K},
+ journal={Mobile Networks and Applications},
+ volume={10},
+ number={6},
+ pages={825--835},
+ year={2005},
+ publisher={Springer-Verlag New York, Inc.}
+}
+
+
+@inproceedings{ref166,
+ title={A coverage-preserving node scheduling scheme for large wireless sensor networks},
+ author={Tian, Di and Georganas, Nicolas D},
+ booktitle={Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications},
+ pages={32--41},
+ year={2002},
+ organization={ACM}
+}
+
+@inproceedings{ref167,
+ title={Energy-efficient target coverage in wireless sensor networks},
+ author={Cardei, Mihaela and Thai, My T and Li, Yingshu and Wu, Weili},
+ booktitle={INFOCOM 2005. 24th Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings IEEE},
+ volume={3},
+ pages={1976--1984},
+ year={2005},
+ organization={IEEE}
+}
+
+@article{ref168,
+ title={Maintaining sensing coverage and connectivity in large sensor networks},
+ author={Zhang, Honghai and Hou, Jennifer C},
+ journal={Ad Hoc \& Sensor Wireless Networks},
+ volume={1},
+ number={1-2},
+ pages={89--124},
+ year={2005},
+ publisher={vol}
+}
+
+@article{ref169,
+ title={Lightweight deployment-aware scheduling for wireless sensor networks},
+ author={Wu, Kui and Gao, Yong and Li, Fulu and Xiao, Yang},
+ journal={Mobile networks and applications},
+ volume={10},
+ number={6},
+ pages={837--852},
+ year={2005},
+ publisher={Springer}
+}
+
+@article{ref170,
+ title={Redundancy and coverage detection in sensor networks},
+ author={C{\u{a}}rbunar, Bogdan and Grama, Ananth and Vitek, Jan and C{\u{a}}rbunar, Octavian},
+ journal={ACM Transactions on Sensor Networks (TOSN)},
+ volume={2},
+ number={1},
+ pages={94--128},
+ year={2006},
+ publisher={ACM}
+}
+
+@inproceedings{ref171,
+ title={On sensor network lifetime and data distortion},
+ author={Kansal, Aman and Ramamoorthy, Aditya and Srivastava, Mani B and Pottie, Gregory J},
+ booktitle={Information Theory, 2005. ISIT 2005. Proceedings. International Symposium on},
+ pages={6--10},
+ year={2005},
+ organization={IEEE}
+}
+
+
+@inproceedings{ref172,
+ title={On the lifetime analysis of always-on wireless sensor network applications},
+ author={Kumar, Santosh and Arora, Anish and Lai, Ten-Hwang},
+ booktitle={Mobile Adhoc and Sensor Systems Conference, 2005. IEEE International Conference on},
+ pages={3--pp},
+ year={2005},
+ organization={IEEE}
+}
+
+@inproceedings{ref173,
+ title={Design Guidelines for Maximizing Lifetime and Avoiding Energy Holes in Sensor Networks with Uniform Distribution and Uniform Reporting.},
+ author={Olariu, Stephan and Stojmenovic, Ivan},
+ booktitle={INFOCOM},
+ pages={1--12},
+ year={2006}
+}
+
+@article{ref174,
+ title={Lifetime analysis of reliable wireless sensor networks},
+ author={Baydere, Sebnem and Safkan, Yasar and Durmaz, Ozlem},
+ journal={IEICE transactions on communications},
+ volume={88},
+ number={6},
+ pages={2465--2472},
+ year={2005},
+ publisher={The Institute of Electronics, Information and Communication Engineers}
+}
+
+
+@inproceedings{ref175,
+ title={Mostly-sleeping wireless sensor networks: connectivity,
+k-coverage, and alpha-lifetime.},
+ author={MO, W. and QIAO, D. and WANG, Z.},
+ booktitle={In Proceedings of the the 43rd Annual Allerton Conference on
+Communication, Control, and Computing},
+ pages={1--12},
+ year={2005}
+}
\ No newline at end of file