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- D.I. Borisov, D.A. Zezyulin, “On Perturbation of Thresholds in Essential Spectrum under Coexistence of Virtual Level and Spectral Singularity”, Russ. J. Math. Phys., 31, № 1, 2024, 60

- D. I Borisov, D. A Zezyulin, “O bifurkatsii porogov sushchestvennogo spektra v prisutstvii spektral'noy singulyarnosti”, Differencialʹnye uravneniâ, 59, № 2, 2023, 270

- Denis Borisov, Andrey Piatnitski, Elena Zhizhina, “Convolution Type Operators With Potential: Essential and Infinite Discrete Spectrum”, Math Methods in App Sciences, 2025, mma.10745
