3 citations to https://www.mathnet.ru/rus/fpm985

1. Rakesh Kumar, Kirankumar R. Hiremath, Sergio Manzetti, “A primer on eigenvalue problems of non-self-adjoint operators”, Anal.Math.Phys., 14:2 (2024)  
2. Gil M.I., “An estimate for the resolvent of a non-self-adjoint differential operator on the half-line”, J. Math. Phys., 52:4 (2011), 043515        
3. Gil' M.I., “Bounds for the spectrum of a matrix differential operator with a damping term”, Z. Angew. Math. Phys., 62:1 (2011), 87–97