@ARTICLE{
author={Koliha JJ,Cvetkovic-Ilic Dragana S,Deng Chunyuan},
year={2012},
title={Generalized Drazin invertibility of combinations of idempotents},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={437},
number={9},
pages={2317-2324},
document_type={Article},
} 

@ARTICLE{
author={Djordjevic Dragan S,Koliha JJ,Straskraba I},
year={2009},
title={Factorization of EP elements in C*-algebras},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={57},
number={6},
pages={587-594},
document_type={Article},
} 

@ARTICLE{
author={Mosic Dijana V,Djordjevic Dragan S,Koliha JJ},
year={2009},
title={EP elements in rings},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={431},
number={5-7},
pages={527-535},
document_type={Article},
} 

@ARTICLE{
author={Cvetkovic-Ilic Dragana S,Dajic Alegra,Koliha JJ},
year={2007},
title={Positive and real-positive solutions to the equation axa* = c in C*-algebras},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={55},
number={6},
pages={535-543},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Djordjevic Dragan S,Cvetkovic-Ilic Dragana S},
year={2007},
title={Moore-Penrose inverse in rings with involution},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={426},
number={2-3},
pages={371-381},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2007},
title={Stability theorems for linear combinations of idempotents},
journal={INTEGRAL EQUATIONS AND OPERATOR THEORY},
volume={58},
number={4},
pages={597-601},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2007},
title={Range projections and the Moore-Penrose inverse in rings with involution},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={55},
number={2},
pages={103-112},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2006},
title={The nullity and rank of linear combinations of idempotent matrices},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={418},
number={1},
pages={11-14},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2005},
title={Differentiability of the g-Drazin inverse},
journal={STUDIA MATHEMATICA},
volume={168},
number={3},
pages={193-201},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2005},
title={Fredholm properties of the difference of orthogonal projections in a Hilbert space},
journal={INTEGRAL EQUATIONS AND OPERATOR THEORY},
volume={52},
number={1},
pages={125-134},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R,Straskraba I},
year={2004},
title={The difference and sum of projectors},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={388},
number={},
pages={279-288},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2004},
title={On the norm of idempotents in C*-algebras},
journal={ROCKY MOUNTAIN JOURNAL OF MATHEMATICS},
volume={34},
number={2},
pages={685-697},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2003},
title={Invertibility of the difference of idempotents},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={51},
number={1},
pages={97-110},
document_type={Article},
} 

@ARTICLE{
author={Koliha JJ,Rakocevic Vladimir R},
year={2002},
title={Invertibility of the sum of idempotents},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={50},
number={4},
pages={285-292},
document_type={Article},
}