\relax 
\citation{KORU2005}
\citation{SUNDARAM2005}
\citation{BOETTICHER2005}
\citation{MAIR2005}
\citation{MENZIES2005}
\citation{CHEN2005}
\citation{MENZIES2005-2}
\citation{HAYES2005}
\citation{HAYES2005-2}
\citation{JALALI2007}
\citation{MA2007}
\citation{DEKHTYAR2007}
\citation{LIU2007}
\citation{WEISS07}
\citation{MIZUNO2007}
\citation{GOKHALE2008}
\citation{AZZEH2008}
\citation{KORTE2008}
\citation{MENZIES2008}
\citation{JIANG2008}
\citation{MOSER2008}
\citation{BOETTICHER08}
\citation{JALALI08}
\citation{LI08}
\citation{LIEBCHEN08}
\citation{WATANABE08}
\citation{BRAGA08}
\citation{PORT2008}
\citation{JIANG20082}
\citation{WEDEL2008}
\citation{TOSUN2008}
\citation{KULTUR2008}
\citation{HATA08}
\citation{KAMEI08}
\citation{YANG08}
\citation{RANA2008}
\citation{HECKMAN2008}
\citation{BRODER2008}
\citation{HOLZ2008}
\citation{ERDOGMUS2008}
\citation{BOETTICHER2009}
\citation{KITCHENHAM2009}
\citation{GAY2009}
\citation{TOSUN2009}
\citation{TOSUN2009-3}
\citation{JIANG2009}
\citation{AZZEH2009}
\citation{MENDE2009}
\citation{WAGNER2009}
\citation{FU09}
\citation{MENZIES2009}
\citation{SARCIA2009-2}
\citation{MORASCA2009}
\citation{SARCIA2009}
\citation{BIRD2009}
\citation{CAGLAYAN2009}
\citation{TOSUN20092}
\citation{WINKLER2009}
\citation{SINGH2009}
\citation{CATAL2009}
\citation{MORAN2009}
\citation{JIA2009}
\citation{SAMI2010}
\citation{MALHOTRA2010}
\citation{FERNANDES2010}
\bibstyle{ieeetr}
\bibdata{references}
\bibcite{KORU2005}{1}
\bibcite{SUNDARAM2005}{2}
\bibcite{BOETTICHER2005}{3}
\bibcite{MAIR2005}{4}
\bibcite{MENZIES2005}{5}
\bibcite{CHEN2005}{6}
\bibcite{MENZIES2005-2}{7}
\bibcite{HAYES2005}{8}
\bibcite{HAYES2005-2}{9}
\bibcite{JALALI2007}{10}
\bibcite{MA2007}{11}
\bibcite{DEKHTYAR2007}{12}
\bibcite{LIU2007}{13}
\bibcite{WEISS07}{14}
\bibcite{MIZUNO2007}{15}
\bibcite{GOKHALE2008}{16}
\bibcite{AZZEH2008}{17}
\bibcite{KORTE2008}{18}
\bibcite{MENZIES2008}{19}
\bibcite{JIANG2008}{20}
\bibcite{MOSER2008}{21}
\bibcite{BOETTICHER08}{22}
\bibcite{JALALI08}{23}
\bibcite{LI08}{24}
\bibcite{LIEBCHEN08}{25}
\bibcite{WATANABE08}{26}
\bibcite{BRAGA08}{27}
\bibcite{PORT2008}{28}
\bibcite{JIANG20082}{29}
\bibcite{WEDEL2008}{30}
\bibcite{TOSUN2008}{31}
\bibcite{KULTUR2008}{32}
\bibcite{HATA08}{33}
\bibcite{KAMEI08}{34}
\bibcite{YANG08}{35}
\bibcite{RANA2008}{36}
\bibcite{HECKMAN2008}{37}
\bibcite{BRODER2008}{38}
\bibcite{HOLZ2008}{39}
\bibcite{ERDOGMUS2008}{40}
\bibcite{BOETTICHER2009}{41}
\bibcite{KITCHENHAM2009}{42}
\bibcite{GAY2009}{43}
\bibcite{TOSUN2009}{44}
\bibcite{TOSUN2009-3}{45}
\bibcite{JIANG2009}{46}
\bibcite{AZZEH2009}{47}
\bibcite{MENDE2009}{48}
\bibcite{WAGNER2009}{49}
\bibcite{FU09}{50}
\bibcite{MENZIES2009}{51}
\bibcite{SARCIA2009-2}{52}
\bibcite{MORASCA2009}{53}
\bibcite{SARCIA2009}{54}
\bibcite{BIRD2009}{55}
\bibcite{CAGLAYAN2009}{56}
\bibcite{TOSUN20092}{57}
\bibcite{WINKLER2009}{58}
\bibcite{SINGH2009}{59}
\bibcite{CATAL2009}{60}
\bibcite{MORAN2009}{61}
\bibcite{JIA2009}{62}
\bibcite{SAMI2010}{63}
\bibcite{MALHOTRA2010}{64}
\bibcite{FERNANDES2010}{65}