И. А. Криштал, Н. Б. Ускова, “Спектральные свойства дифференциальных операторов первого порядка с инволюцией и группы операторов”, Сиб. электрон. матем. изв., 16 (2019), 1091–1132
Guojing Ren, Ravi P. Agarwal, “Properties of Linear Relations in Banach Spaces”, Complex Anal. Oper. Theory, 13:4 (2019), 1917
S Hariyanto, R K Sari, Farikhin, Y D Sumanto, Solikhin, A Aziz, “Spectral theory for self-adjoint linear relation (SALR) on a Hilbert space and its application in homogenous abstract cauchy problem”, J. Phys.: Conf. Ser., 1321:2 (2019), 022070
Glushak A.V., “Criterion For the Solvability of the Weighted Cauchy Problem For An Abstract Euler-Poisson-Darboux Equation”, Differ. Equ., 54:5 (2018), 622–632
A. G. Baskakov, N. B. Uskova, “A Generalized Fourier Method for the System of First-Order Differential Equations with an Involution and a Group of Operators”, Diff Equat, 54:2 (2018), 277
Oreshina M.N., “Approximate solution of a parabolic equation with the use of a rational approximation to the operator exponential”, Differ. Equ., 53:3 (2017), 398–408
Chafai E., Alvarez T., “Ascent, Essential Ascent, Descent and Essential Descent For a Linear Relation in a Linear Space”, Filomat, 31:3 (2017), 709–721
М. Н. Орешина, “Спектральное разложение нормального оператора в действительном гильбертовом пространстве”, Уфимск. матем. журн., 9:4 (2017), 87–99 ; M. N. Oreshina, “Spectral decomposition of normal operator in real Hilbert space”, Ufa Math. J., 9:4 (2017), 85–96
Xu G., Shi Yu., “Perturbations of Spectra of Closed Subspaces in Banach Spaces”, Linear Alg. Appl., 531 (2017), 547–574
Nadaban S., “Some fundamental properties of fuzzy linear relations between vector spaces”, Filomat, 30:1 (2016), 41–53