Kostadinov Marko V,Krstic Mihailo A,Rajkovic Kostadin P,Petkovic Marko D (2026) Adaptive coefficients iterative method for computing matrix inverse, LINEAR ALGEBRA AND ITS APPLICATIONS, vol. 731, br. , str. 277-305 (Article) Kostadinov Marko V (2025) A Note on the Perturbations of Pseudospectra of 2 X 2 Upper-Triangular Operator Matrices, FACTA UNIVERSITATIS-SERIES MATHEMATICS AND INFORMATICS, vol. 40, br. 4, str. 931-943 (Article) Kostadinov Marko V (2021) Injectivity of Linear Combinations in B(H), ELECTRONIC JOURNAL OF LINEAR ALGEBRA, vol. 37, br. , str. - (Article) Kostadinov Marko V (2021) Operator matrix representations of the Generalised Bott-Duffin Inverse, BULLETIN OF THE IRANIAN MATHEMATICAL SOCIETY, vol. 47, br. 2, str. 523-533 (Article) Cvetkovic-Ilic Dragana S,Kostadinov Marko V (2019) Consistency in invertibility and Fredholmness of operator matrices, JOURNAL OF SPECTRAL THEORY, vol. 9, br. 2, str. 635-649 (Article) Cvetkovic-Ilic Dragana S,Kostadinov Marko V (2018) Invertibility of linear combinations in B(H), LINEAR & MULTILINEAR ALGEBRA, vol. 66, br. 11, str. 2139-2150 (Article)