@ARTICLE{
author={Horvat Adam Matija,Sarajlija Nikola},
year={2026},
title={On the Fractional Relaxation Equation With Scarpi Derivative},
journal={MATHEMATICAL METHODS IN THE APPLIED SCIENCES},
volume={},
number={},
pages={-},
document_type={Article; Early Access},
} 

@ARTICLE{
author={Sarajlija Nikola,Djordjevic Dragan S},
year={2025},
title={Completion Problem of Upper Triangular 3x3 OperatorMatrices on Arbitrary Banach Spaces},
journal={BULLETIN OF THE IRANIAN MATHEMATICAL SOCIETY},
volume={51},
number={6},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Sarajlija Nikola},
year={2024},
title={Upper Triangular Operator Matrices and Stability of Their Various Spectra},
journal={RESULTS IN MATHEMATICS},
volume={79},
number={4},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Sarajlija Nikola},
year={2023},
title={Invertibility properties of operator matrices on Hilbert spaces},
journal={ADVANCES IN OPERATOR THEORY},
volume={8},
number={3},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Sarajlija Nikola},
year={2023},
title={Perturbing the spectrum of operator T-n(d)(A)},
journal={REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS},
volume={117},
number={1},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Sarajlija Nikola},
year={2022},
title={Fredholmness and Weylness of Block Operator Matrices},
journal={FILOMAT},
volume={36},
number={8},
pages={2507-2518},
document_type={Article},
}