2 citations to https://www.mathnet.ru/rus/vtgu934

1. M. I. Muminov, I. N. Bozorov, T. Kh. Rasulov, “On the Number of Components of the Essential Spectrum of One 2 × 2 Operator Matrix”, Russ Math., 68:2 (2024), 75  
2. Firdavs Almuratov, Salokhiddin Alimov, INTERNATIONAL SCIENTIFIC CONFERENCE ON MODERN PROBLEMS OF APPLIED SCIENCE AND ENGINEERING: MPASE2024, 3244, INTERNATIONAL SCIENTIFIC CONFERENCE ON MODERN PROBLEMS OF APPLIED SCIENCE AND ENGINEERING: MPASE2024, 2024, 020051