4 citations to 10.1007/s10958-015-2238-3 (Crossref Cited-By Service)

1. D. I. Borisov, D. A. Zezyulin, M. Znojil, “Bifurcations of thresholds in essential spectra of elliptic operators under localized non‐Hermitian perturbations”, Stud Appl Math, 146, no. 4, 2021, 834  
2. D I Borisov, M Znojil, “On eigenvalues of a $ \mathscr{P\!T}$-symmetric operator in a thin layer”, Sb. Math., 208, no. 2, 2017, 173  
3. 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, no. 1, 2024, 60  
4. Denis Borisov, Andrey Piatnitski, Elena Zhizhina, “Convolution Type Operators With Potential: Essential and Infinite Discrete Spectrum”, Math Methods in App Sciences, 2025, mma.10745