-\bibcite{castano2013column}{{6}{2013}{{Casta{\~n}o et~al.}}{{Casta{\~n}o, Rossi, Sevaux, and Velasco}}}
-\bibcite{Deng2012}{{7}{2012}{{Deng, Jiguo~Yu, and Chen}}{{}}}
-\bibcite{deschinkel2012column}{{8}{2012}{{Deschinkel}}{{}}}
-\bibcite{AMPL}{{9}{November 12, 2002}{{Fourer, Gay, and Kernighan}}{{}}}
-\bibcite{HeShibo}{{10}{2014}{{He et~al.}}{{He, Gong, Zhang, Chen, and Sun}}}
-\bibcite{Huang:2003:CPW:941350.941367}{{11}{2005{a}}{{Huang and Tseng}}{{}}}
-\bibcite{huang2005coverage}{{12}{2005{b}}{{Huang and Tseng}}{{}}}
-\bibcite{idrees2014coverage}{{13}{2014{a}}{{Idrees et~al.}}{{Idrees, Deschinkel, Salomon, and Couturier}}}
-\bibcite{Idrees2}{{14}{2014{b}}{{Idrees et~al.}}{{Idrees, Deschinkel, Salomon, and Couturier}}}
-\bibcite{jaggi2006}{{15}{2006}{{Jaggi and Abouzeid}}{{}}}
-\bibcite{kim2013maximum}{{16}{2013}{{Kim and Cobb}}{{}}}
-\bibcite{0031-9155-44-1-012}{{17}{1999}{{Lee et~al.}}{{Lee, Gallagher, Silvern, Wuu, and Zaider}}}
-\bibcite{li2013survey}{{18}{2013}{{Li and Vasilakos}}{{}}}
-\bibcite{ling2009energy}{{19}{2009}{{Ling and Znati}}{{}}}
-\bibcite{glpk}{{20}{2012}{{Makhorin}}{{}}}
-\bibcite{Misra}{{21}{2011}{{Misra, Kumar, and Obaidat}}{{}}}
-\bibcite{pc10}{{22}{2010}{{Padmavathy and Chitra}}{{}}}
-\bibcite{puccinelli2005wireless}{{23}{2005}{{Puccinelli and Haenggi}}{{}}}
-\bibcite{pujari2011high}{{24}{2011}{{Pujari}}{{}}}
-\bibcite{qu2013distributed}{{25}{2013}{{Qu and Georgakopoulos}}{{}}}
-\bibcite{rault2014energy}{{26}{2014}{{Rault, Bouabdallah, and Challal}}{{}}}
-\bibcite{rossi2012exact}{{27}{2012}{{Rossi, Singh, and Sevaux}}{{}}}
-\bibcite{Tian02}{{28}{2002}{{Tian and Georganas}}{{}}}
-\bibcite{varga}{{29}{2003}{{Varga}}{{}}}
-\bibcite{ChinhVu}{{30}{2006}{{Vu et~al.}}{{Vu, Gao, Deshmukh, and Li}}}
-\bibcite{chin2007}{{31}{2009}{{Vu}}{{}}}
-\bibcite{wang2011coverage}{{32}{2011}{{Wang}}{{}}}
-\bibcite{5714480}{{33}{2010}{{Xing, Li, and Wang}}{{}}}
-\bibcite{xu2001geography}{{34}{2001}{{Xu, Heidemann, and Estrin}}{{}}}
-\bibcite{yan2008design}{{35}{2008}{{Yan et~al.}}{{Yan, Gu, He, and Stankovic}}}
-\bibcite{yang2014novel}{{36}{2014{a}}{{Yang and Chin}}{{}}}
-\bibcite{yangnovel}{{37}{2014{b}}{{Yang and Chin}}{{}}}
-\bibcite{Yang2014}{{38}{2014}{{Yang and Liu}}{{}}}
-\bibcite{yick2008wireless}{{39}{2008}{{Yick, Mukherjee, and Ghosal}}{{}}}
-\bibcite{Zhang05}{{40}{2005}{{Zhang and Hou}}{{}}}
-\bibcite{zhou2009variable}{{41}{2009}{{Zhou, Das, and Gupta}}{{}}}
-\bibcite{zorbas2010solving}{{42}{2010}{{Zorbas et~al.}}{{Zorbas, Glynos, Kotzanikolaou, and Douligeris}}}
-\endpage{16}
+\bibcite{castano2013column}{{6}{2014}{{Casta{\~n}o et~al.}}{{Casta{\~n}o, Rossi, Sevaux, and Velasco}}}
+\bibcite{iamigo:cplex}{{7}{2010}{{CPLEX}}{{}}}
+\bibcite{Deng2012}{{8}{2012}{{Deng, Jiguo~Yu, and Chen}}{{}}}
+\bibcite{deschinkel2012column}{{9}{2012}{{Deschinkel}}{{}}}
+\newlabel{my-labelx}{{4}{18}}
+\bibcite{AMPL}{{10}{November 12, 2002}{{Fourer, Gay, and Kernighan}}{{}}}
+\bibcite{HeShibo}{{11}{2014}{{He et~al.}}{{He, Gong, Zhang, Chen, and Sun}}}
+\bibcite{huang2005coverage}{{12}{2005}{{Huang and Tseng}}{{}}}
+\bibcite{doi:10.1155/2010/926075}{{13}{2010}{{Hung and Lui}}{{}}}
+\bibcite{idrees2014coverage}{{14}{2014}{{Idrees et~al.}}{{Idrees, Deschinkel, Salomon, and Couturier}}}
+\bibcite{Idrees2}{{15}{2015}{{Idrees et~al.}}{{Idrees, Deschinkel, Salomon, and Couturier}}}
+\bibcite{jaggi2006}{{16}{2006}{{Jaggi and Abouzeid}}{{}}}
+\bibcite{kim2013maximum}{{17}{2013}{{Kim and Cobb}}{{}}}
+\bibcite{1279193}{{18}{2004}{{Kumagai}}{{}}}
+\bibcite{0031-9155-44-1-012}{{19}{1999}{{Lee et~al.}}{{Lee, Gallagher, Silvern, Wuu, and Zaider}}}
+\bibcite{li2013survey}{{20}{2013}{{Li and Vasilakos}}{{}}}
+\bibcite{li2011transforming}{{21}{2011}{{Li et~al.}}{{Li, Vu, Ai, Chen, and Zhao}}}
+\bibcite{ling2009energy}{{22}{2009}{{Ling and Znati}}{{}}}
+\bibcite{glpk}{{23}{2012}{{Makhorin}}{{}}}
+\bibcite{Misra}{{24}{2011}{{Misra, Kumar, and Obaidat}}{{}}}
+\bibcite{pc10}{{25}{2010}{{Padmavathy and Chitra}}{{}}}
+\bibcite{puccinelli2005wireless}{{26}{2005}{{Puccinelli and Haenggi}}{{}}}
+\bibcite{pujari2011high}{{27}{2011}{{Pujari}}{{}}}
+\bibcite{qu2013distributed}{{28}{2013}{{Qu and Georgakopoulos}}{{}}}
+\bibcite{rault2014energy}{{29}{2014}{{Rault, Bouabdallah, and Challal}}{{}}}
+\bibcite{doi:10.1080/0305215X.2012.687732}{{30}{2013}{{Singh, Rossi, and Sevaux}}{{}}}
+\bibcite{varga}{{31}{2003}{{Varga}}{{}}}
+\bibcite{ChinhVu}{{32}{2006}{{Vu et~al.}}{{Vu, Gao, Deshmukh, and Li}}}
+\bibcite{chin2007}{{33}{2009}{{Vu}}{{}}}
+\bibcite{wang2011coverage}{{34}{2011}{{Wang}}{{}}}
+\bibcite{wang2014keeping}{{35}{2014}{{Wang et~al.}}{{Wang, Yang, Lin, and Lin}}}
+\bibcite{5714480}{{36}{2010}{{Xing, Li, and Wang}}{{}}}
+\bibcite{xu2001geography}{{37}{2001}{{Xu, Heidemann, and Estrin}}{{}}}
+\bibcite{yan2008design}{{38}{2008}{{Yan et~al.}}{{Yan, Gu, He, and Stankovic}}}
+\bibcite{yang2014novel}{{39}{2014{a}}{{Yang and Chin}}{{}}}
+\bibcite{yangnovel}{{40}{2014{b}}{{Yang and Chin}}{{}}}
+\bibcite{Yang2014}{{41}{2014}{{Yang and Liu}}{{}}}
+\bibcite{yick2008wireless}{{42}{2008}{{Yick, Mukherjee, and Ghosal}}{{}}}
+\bibcite{Zhang05}{{43}{2005}{{Zhang and Hou}}{{}}}
+\bibcite{zhou2009variable}{{44}{2009}{{Zhou, Das, and Gupta}}{{}}}
+\bibcite{zorbas2010solving}{{45}{2010}{{Zorbas et~al.}}{{Zorbas, Glynos, Kotzanikolaou, and Douligeris}}}
+\endpage{20}
