A GLAZMAN–POVZNER–WIENHOLTZ THEOREM ON GRAPHS Article Kostenko A., Malamud M., Nicolussi N. Advances in Mathematics. Academic Press Inc.. Vol. 395. 2022.
CHARACTERISTICS OF GUT MICROBIOTA IN AUTOIMMUNE DISEASES OF THE THYROID GLAND AND THE METHODS OF ITS CORRECTION Article Sturov N., Popov S., Kostenko A., Roitberg G. Archiv Euromedica. European Scientific Society. Vol. 11. 2021. P. 82-85
THE CLASSICAL MOMENT PROBLEM AND GENERALIZED INDEFINITE STRINGS Article Eckhardt J., Kostenko A. Integral Equations and Operator Theory. Springer Basel. Vol. 90. 2018.
SPECTRAL THEORY OF INFINITE QUANTUM GRAPHS Article Exner P., Kostenko A., Malamud M., Neidhardt H. Annales Henri Poincare. Birkhauser Verlag AG. Vol. 19. 2018. P. 3457-3510
ON THE HAMILTONIAN–KREIN INDEX FOR A NON-SELF-ADJOINT SPECTRAL PROBLEM Article Kostenko A., Nicolussi N. Proceedings of the American Mathematical Society. Vol. 146. 2018. P. 3907-3921