Baskakov, Anatoly, Galina Garkavenko, Ilya Krishtal, and Uskova Natalia. “THE METHOD OF SIMILAR OPERATORS IN THE SPECTRAL ANALYSIS OF INFINITE OPERATOR MATRICES. EXAMPLES II”. Applied Mathematics & Physics 53, no. 3 (September 30, 2021): 205–212. Accessed November 12, 2026. https://maths-physics-journal.ru/index.php/journal/article/view/63.