-\begin{thebibliography}{45}
+\begin{thebibliography}{44}
\newcommand{\enquote}[1]{``#1''}
\providecommand{\natexlab}[1]{#1}
\providecommand{\url}[1]{\normalfont{#1}}
barrier-coverage in Wireless Sensor Networks.'' In \emph{19th IEEE
International Conference on Networks (ICON), 2013,} 1--6.
+\bibitem[Kumagai(2004)]{1279193}
+Kumagai, J. 2004. ``Life of birds [wireless sensor network for bird study].''
+ \emph{Spectrum, IEEE} 41 (4): 42--49.
+
\bibitem[Lee et~al.(1999)Lee, Gallagher, Silvern, Wuu, and
Zaider]{0031-9155-44-1-012}
Lee, Eva~K, Richard~J Gallagher, David Silvern, Cheng-Shie Wuu, and Marco
Varga, A. 2003. ``OMNeT++ Discrete Event Simulation System.'' \emph{Available:
http://www.omnetpp.org} .
-\bibitem[Vu et~al.(2009)Vu, Chen, Zhao, and Li]{vu2009universal}
-Vu, Chinh, Guantao Chen, Yi~Zhao, and Yingshu Li. 2009. ``A universal framework
- for partial coverage in Wireless Sensor Networks.'' In \emph{Performance
- Computing and Communications Conference (IPCCC), 2009 IEEE 28th
- International,} 1--8. IEEE.
-
\bibitem[Vu et~al.(2006)Vu, Gao, Deshmukh, and Li]{ChinhVu}
Vu, Chinh, Shan Gao, Wiwek Deshmukh, and Yingshu Li. 2006. ``Distributed
Energy-Efficient Scheduling Approach for K-Coverage in Wireless Sensor
Wang, Bang. 2011. ``Coverage problems in sensor networks: A survey.'' \emph{ACM
Computing Surveys (CSUR)} 43 (4): 32--53.
-\bibitem[Wang et~al.(2014)Wang, Yang, Lin, and Lin]{wang2014keeping}
-Wang, Lei, Jui-Yu Yang, Yu-Yun Lin, and Wei-Jun Lin. 2014. ``Keeping Desired
- QoS by a Partial Coverage Algorithm for Cluster-Based Wireless Sensor
- Networks.'' \emph{Journal of Networks} 9 (12): 3221--3229.
-
\bibitem[Xing, Li, and Wang(2010)]{5714480}
Xing, Xiaofei, Jie Li, and Guojun Wang. 2010. ``Integer Programming Scheme for
Target Coverage in Heterogeneous Wireless Sensor Networks.'' In \emph{Mobile