@ARTICLE{
author={Djikic Marko S,Nikolov-Radenkovic Jovana T},
year={2020},
title={Simultaneous Extension of Two Bounded Operators Between Hilbert Spaces},
journal={JOURNAL OF OPERATOR THEORY},
volume={83},
number={1},
pages={229-250},
document_type={Article},
} 

@ARTICLE{
author={Djikic Marko S},
year={2017},
title={Operators with Compatible Ranges},
journal={FILOMAT},
volume={31},
number={14},
pages={4579-4585},
document_type={Article},
} 

@ARTICLE{
author={Djikic Marko S,Fongi Guillermina,Maestripieri Alejandra},
year={2017},
title={The minus order and range additivity},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={531},
number={},
pages={234-256},
document_type={Article},
} 

@ARTICLE{
author={Djikic Marko S},
year={2017},
title={Lattice Properties of the Core-Partial Order},
journal={BANACH JOURNAL OF MATHEMATICAL ANALYSIS},
volume={11},
number={2},
pages={398-415},
document_type={Article},
} 

@ARTICLE{
author={Djikic Marko S,Djordjevic Dragan S},
year={2016},
title={Coherent and precoherent elements in Rickart *-rings},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={509},
number={},
pages={64-81},
document_type={Article},
} 

@ARTICLE{
author={Djikic Marko S},
year={2016},
title={Extensions of the Fill-Fishkind formula and the infimum - parallel sum relation},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={64},
number={11},
pages={2335-2349},
document_type={Article},
} 

@ARTICLE{
author={Djikic Marko S},
year={2016},
title={Properties of the star supremum for arbitrary Hilbert space operators},
journal={JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS},
volume={441},
number={1},
pages={446-461},
document_type={Article},
} 

@ARTICLE{
author={Cvetkovic-Ilic Dragana S,Djikic Marko S},
year={2016},
title={Various solutions to reverse order law problems},
journal={LINEAR & MULTILINEAR ALGEBRA},
volume={64},
number={6},
pages={1207-1219},
document_type={Article},
}