\relax 
\citation{KORU2005,SUNDARAM2005,BOETTICHER2005,MAIR2005,MENZIES2005,CHEN2005,MENZIES2005-2,HAYES2005,HAYES2005-2,JALALI2007,MA2007,DEKHTYAR2007,LIU2007,WEISS07,MIZUNO2007,GOKHALE2008,AZZEH2008,KORTE2008,MENZIES2008,JIANG2008,MOSER2008,BOETTICHER08,JALALI08,LI08,LIEBCHEN08,WATANABE08,BRAGA08,PORT2008,JIANG20082,WEDEL2008,TOSUN2008,KULTUR2008,HATA08,KAMEI08,YANG08,RANA2008,HECKMAN2008,BRODER2008,HOLZ2008,ERDOGMUS2008,BOETTICHER2009,KITCHENHAM2009,GAY2009,TOSUN2009,TOSUN2009-3,JIANG2009,AZZEH2009,MENDE2009,WAGNER2009,FU09,MENZIES2009,SARCIA2009-2,MORASCA2009,SARCIA2009,BIRD2009,CAGLAYAN2009,TOSUN20092,WINKLER2009,SINGH2009,CATAL2009,MORAN2009,JIA2009,SAMI2010,MALHOTRA2010,FERNANDES2010}
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\bibcite{PORT2008}{{28}{}{{}}{{}}}
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\bibcite{WEDEL2008}{{30}{}{{}}{{}}}
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\bibcite{BIRD2009}{{55}{}{{}}{{}}}
\bibcite{CAGLAYAN2009}{{56}{}{{}}{{}}}
\bibcite{TOSUN20092}{{57}{}{{}}{{}}}
\bibcite{WINKLER2009}{{58}{}{{}}{{}}}
\bibcite{SINGH2009}{{59}{}{{}}{{}}}
\bibcite{CATAL2009}{{60}{}{{}}{{}}}
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