M. Korovina, “Asymptotics of solutions of linear differential equations with holomorphic coefficients in the neighborhood of an infinitely distant point”, Mathematics, 8:12 (2020), 2249
Ya. O. Baranetskij, I. I. Demkiv, P. I. Kalenyuk, “A nonlocal problem with multipoint perturbations of strongly regular Birkhoff boundary conditions for an even-order differential operator”, Mat. Met. Fiz. Mekh. Polya, 63:1 (2020)
С. С. Мирзоев, А. Т. Газилова, “О полноте части корневых векторов одного класса квазиэллиптических операторных пучков третьего порядка”, Матем. заметки, 105:5 (2019), 801–804 ; S. S. Mirzoyev, A. T. Gazilova, “On the Completeness of a Part of Root Vectors for a Class of Third-Order Quasi-Elliptic Operator Pencils”, Math. Notes, 105:5 (2019), 798–801
А. К. Мотовилов, А. А. Шкаликов, “Сохранение свойства безусловной базисности при несамосопряженных возмущениях самосопряженных операторов”, Функц. анализ и его прил., 53:3 (2019), 45–60
В. Е. Владыкина, А. А. Шкаликов, “Регулярные обыкновенные дифференциальные операторы с инволюцией”, Матем. заметки, 106:5 (2019), 643–659 ; V. E. Vladykina, A. A. Shkalikov, “Regular Ordinary Differential Operators with Involution”, Math. Notes, 106:5 (2019), 674–687
A. V. Agibalova, A. A. Lunyov, M. M. Malamud, L. L. Oridoroga, “Completeness property of one-dimensional perturbations of normal and spectral operators generated by first order systems”, Integr. Equ. Oper. Theory, 91:4 (2019), UNSP 37
M. V. Kukushkin, “Asymptotics of eigenvalues for differential operators of fractional order”, Fract. Calc. Appl. Anal., 22:3 (2019), 658–680
N. F. Valeev, E. A. Nazirova, R. G. Azizova, “Multiparameter inverse spectral problems in the oscillation model of an orthotropic plate”, Azerbaijan J. Math., 9:2 (2019), 88–99
A. K. Motovilov, A. A. Shkalikov, “Preservation of the Unconditional Basis Property under Non-Self-Adjoint Perturbations of Self-Adjoint Operators”, Funct Anal Its Appl, 53:3 (2019), 192
A. A. Shkalikov, “Basis properties of root functions of differential operators with spectral parameter in the boundary conditions”, Differ. Equ., 55:5 (2019), 631–643