Aymen Ammar, Aref Jeribi, Bilel Saadaoui, “A characterization of essential pseudospectra of the multivalued operator matrix”, Anal.Math.Phys., 8, № 3, 2018, 325
Nedra Moalla, Ines Walha, “Stability of Schechter essential spectrum of 2×2 block operator matrix by means of measure of non strict singularity and application”, Indagationes Mathematicae, 28, № 6, 2017, 1275
Aymen Ammar, Mohammed Zerai Dhahri, Aref Jeribi, “Some properties of upper triangular $3\times 3$ 3 × 3 -block matrices of linear relations”, Boll Unione Mat Ital, 8, № 3, 2015, 189
Mitra Shamsabadi, Ali Akbar Arefijamaal, Peter Balazs, “The Invertibility of U-Fusion Cross Gram Matrices of Operators”, Mediterr. J. Math., 17, № 4, 2020, 130
Naouel Ben Ali, Aref Jeribi, Nedra Moalla, “On some subsets of Schechter's essential spectrum of a matrix operator and application to transport operator”, Math. Nachr., 283, № 9, 2010, 1245
Peter Howard, Alim Sukhtayev, “Renormalized Oscillation Theory for Linear Hamiltonian Systems on [0, 1] Via the Maslov Index”, J Dyn Diff Equat, 36, № 1, 2024, 535
Salma Charfi, Aref Jeribi, “On a characterization of the essential spectra of some matrix operators and application to two-group transport operators”, Math. Z., 262, № 4, 2009, 775
Salma Charfi, Ines Walha, “ON RELATIVE ESSENTIAL SPECTRA OF BLOCK OPERATOR MATRICES AND APPLICATION”, Bulletin of the Korean Mathematical Society, 53, № 3, 2016, 681
Aref Jeribi, Spectral Theory and Applications of Linear Operators and Block Operator Matrices, 2015, 101
Peter Balazs, Mitra Shamsabadi, Ali Akbar Arefijamaal, Gilles Chardon, “Representation of operators using fusion frames”, Applied and Computational Harmonic Analysis, 68, 2024, 101596