S. Ivković, “On Operators with Closed Range and Semi-Fredholm Operators Over W*-Algebras”, Russ. J. Math. Phys., 27, № 1, 2020, 48
Stefan Ivkovic, “On non-adjointable semi-C*-Fredholm operators and semi-C*-Weyl operators”, Filomat, 37, № 17, 2023, 5523
Stefan Ivković, “On Various Generalizations of Semi-${\mathcal {A}}$-Fredholm Operators”, Complex Anal. Oper. Theory, 14, № 3, 2020, 41
A. A. Arutyunov, A. A. Irmatov, V. M. Manuilov, A. S. Mishchenko, F. Yu. Popelenskii, A. Yu. Savin, “Noncommutative Geometry and Topology at the Lomonosov Moscow State University”, Moscow Univ. Math. Bull., 79, № 6, 2024, 265