\title{{\itshape Perimeter-based Coverage Optimization to Improve Lifetime \\
in Wireless Sensor Networks}}
-\author{Ali Kadhum Idrees$^{a}$, Karine Deschinkel$^{a}$$^{\ast}$\thanks{$^\ast$Corresponding author. Email: karine.deschinkel@univ-fcomte.fr}, Michel Salomon$^{a}$ and Rapha\"el Couturier $^{a}$
+\author{Ali Kadhum Idrees$^{a, b}$, Karine Deschinkel$^{a}$$^{\ast}$\thanks{$^\ast$Corresponding author. Email: karine.deschinkel@univ-fcomte.fr}, Michel Salomon$^{a}$ and Rapha\"el Couturier $^{a}$
$^{a}${\em{FEMTO-ST Institute, UMR 6174 CNRS, University of Franche-Comt\'e,
- Belfort, France}}}
+ Belfort, France}}
+$^{b}${\em{Department of Computer Science, University of Babylon, Babylon, Iraq}} }
+
+
\maketitle
views. Finally, it would be interesting to implement PeCO protocol using a
sensor-testbed to evaluate it in real world applications.
+
+\subsection{Acknowledgements}
+The authors are deeply grateful to the anonymous reviewers for their constructive advice, which improved the technical quality of the paper. As a Ph.D. student, Ali Kadhum IDREES would like to gratefully acknowledge the University of Babylon - IRAQ for financial support and Campus France for the received support. This work is also partially funded by the Labex ACTION program (contract ANR-11-LABX-01-01).
+
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