Yagub N. Aliyev, 282, Operator Theory, Functional Analysis and Applications, 2021, 33
Seyfollah Mosazadeh, “A new approach to asymptotic formulas for eigenfunctions of discontinuous non-selfadjoint Sturm–Liouville operators”, J. Pseudo-Differ. Oper. Appl., 11, № 4, 2020, 1805
Manfred Möller, “Minimality of eigenfunctions and associated functions of ordinary differential operators”, Adv. Oper. Theory, 5, № 3, 2020, 1014
Ziyatkhan S. Aliyev, Gunay T. Mamedova, “Some properties of eigenfunctions for the equation of vibrating beam with a spectral parameter in the boundary conditions”, Journal of Differential Equations, 269, № 2, 2020, 1383
Nazim Kerimov, Yagub Aliyev, 798, Advances in Functional Analysis and Operator Theory, 2024, 1
N. Kapustin, A. Kholomeeva, “One Problem for the Bessel Equation with a Spectral Parameter in the Boundary Condition”, Lobachevskii J Math, 45, № 5, 2024, 2293
Yagub Aliyev, 6, Analysis and Applied Mathematics, 2024, 21