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Citations (Crossref Cited-By Service + Math-Net.Ru) |
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 2023 |
| 1. |
Kh. K. Ishkin, “Spectral Properties of the Non-Sectorial Sturm–Liouville Operator on the Semiaxis”, Math. Notes, 113:5 (2023), 663–679      |
| 2. |
Kh. Ishkin, “On Analytic Perturbations of a Non-Self-Adjoint Anharmonic Oscillator”, Lobachevskii J. Math., 44 (2023), 1854–1869 |
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| 2022 |
| 3. |
Kh. K. Ishkin, L. G. Davletova, “An Analogue of the Gelfand–Levitan Trace Formula for the Sturm–Liouville Operator with a Meromorphic Potential”, Lobachevskii J. Math., 43 (2022), 1519–1531 |
| 4. |
Kh. K. Ishkin, R. I. Marvanov, “Erratum”, Ufa Math. J., 14:4 (2022), 150 |
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| 2021 |
| 5. |
Kh. K. Ishkin, R. I. Marvanov, “On the Class of Potentials with Trivial Monodromy”, Lobachevskii J. Math., 42 (2021), 1166–1174
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| 2020 |
| 6. |
Kh. K. Ishkin, R. I. Marvanov, “Equivalence criterion for two asymptotic formulae”, Ufa Math. J., 12:1 (2020), 30–42 |
| 7. |
Kh. K. Ishkin, L. G. Davletova, “Regularized Trace of a Sturm—Liouville Operator on a Curve with a regular Singularity on the Chord”, Differential Equations, 56:10 (2020), 1257–1269  |
| 8. |
Kh. K. Ishkin, R. I. Marvanov, “On localization conditions for spectrum of model operator for Orr–Sommerfeld equation”, Ufa Math. J., 12:4 (2020), 64–77 |
| 9. |
Kh. K. Ishkin, R. I. Marvanov, “Non-accretive Sturm-Liouville operator with discrete spectrum”, Journal of Mathematics Mechanics and Computer Science, 108:4 (2020), 18–25 |
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| 2019 |
| 10. |
L. G. Valiullina, Kh. K. Ishkin, “The formula for the regularized trace of the Sturm-Liouville operator with a logarithmic potential”, Tamkang Journal of Mathematics, 50:3 (2019), 199–211 |
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| 2018 |
| 11. |
Kh. K. Ishkin, “Conditions of Spectrum Localization for Operators not Close to Self-Adjoint Operators”, Doklady Mathematics, 97:2 (2018), 170–173  |
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| 2021 |
| 12. |
Kh. K. Ishkin, A. V. Rezbayev, “On the Davies Formula for the Distribution of Eigenvalues of a Non-Self-Adjoint Differential Operator”, J. Math. Sci., 252:3 (2021), 374–383 |
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| 2018 |
| 13. |
L. G. Valiullina, Kh. K. Ishkin, R. I. Marvanov, “Spectral asymptotics for fourth order differential operator with two turning points”, Ufa Math. J., 10:4 (2018), 24–39 |
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| 2019 |
| 14. |
L. G. Valiullina, Kh. K. Ishkin, “On the localization conditions for the spectrum of a non-self-adjoint Sturm–Liouville operator with slowly growing potential”, J. Math. Sci., 241:5 (2019), 556–569 |
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| 2017 |
| 15. |
Kh. K. Ishkin, A. V. Rezbayev, “On the conditions for the existence of triangular transformation operator for a binomial differential equations”, International Conference “Functional Analysis in Interdisciplinary Applications” (FAIA2017), AIP Conference Proceedings (Astana, Okt 02–05, 2017), 1880, eds. T. Kal'menov, M. Sadybekov, American Institute of Physics, Melville, NY, 2017, 050006 |
| 16. |
Kh. K. Ishkin, “A localization criterion for the spectrum of the Sturm–Liouville operator on a curve”, St. Petersburg Math. J., 28:1 (2017), 37–63 |
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| 2016 |
| 17. |
Kh. K. Ishkin, Kh. Kh. Murtazin, “Asymptotics for the eigenvalues of a fourth order differential operator in a “degenerate” case”, Ufa Mathematical Journal, 8:3 (2016), 79–94 |
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| 2015 |
| 18. |
Ishkin Kh. K., “On the Birkhoff–Tamarkin–Langer Conditions and a Conjecture of Davies”, Doklady Mathematics, 91:3 (2015), 259–262
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| 2013 |
| 19. |
Kh. K. Ishkin, “On a Trivial Monodromy Criterion for the Sturm–Liouville Equation”, Math. Notes, 94:4 (2013), 508–523 |
| 20. |
Kh. K. Ishkin, “On analytic properties of Weyl function of Sturm–Liouville operator with a decaying complex potential”, Ufa Math. Journal, 5:1 (2013), 36–55 |
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| 2012 |
| 21. |
Ishkin Kh. K., “Conditions for localization of the limit spectrum of a model operator associated with the Orr–Sommerfeld equation”, Doklady Mathematics, 86:1 (2012), 549–552 |
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| 2011 |
| 22. |
Kh. K. Ishkin, “On continuity of the spectrum of a singular quasi-differential operator with respect to a parameter”, Eurasian Math. J., 2:3 (2011), 67–81
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| 2009 |
| 23. |
Ishkin Kh. K., “A localization criterion for the eigenvalues of a spectrally unstable operator”, Doklady Mathematics, 80:3 (2009), 829–832 |
| 24. |
Ishkin Kh. K., “On the Spectral Instability of the Sturm–Liouville Operator with a Complex Potential”, Differential Equations, 45:4 (2009), 494–509 |
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| 2008 |
| 25. |
Kh. K. Ishkin, “On the Uniqueness Criterion for Solutions of the Sturm–Liouville Equation”, Math. Notes, 84:4 (2008), 515–528 |
| 26. |
Kh. K. Ishkin, “On localization of the spectrum of the problem with complex weight”, J. Math. Sci., 150:6 (2008), 2488–2499 |
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| 2005 |
| 27. |
Kh. K. Ishkin, “Necessary Conditions for the Localization of the Spectrum of the Sturm–Liouville Problem on a Curve”, Math. Notes, 78:1 (2005), 64–75 |
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| 2002 |
| 28. |
Kh. K. Ishkin, “A Criterion for Spectrum Decomposition”, Math. Notes, 72:5 (2002), 620–630 |
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| 2000 |
| 29. |
Kh. K. Ishkin, Kh. Kh. Murtazin, “Quantum defect for the Dirac operator with a nonanalytic potential”, Theoret. and Math. Phys., 125:3 (2000), 1678–1686 |
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| 1995 |
| 30. |
Kh.K.Ishkin, “Asymptotic behavior of the spectrum and the regularized trace of higher-order singular differential operators”, Differential equations, 31:10 (1995), 1622–1632 |
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