JURAKULOVA, Farangis. Finiteness of Eigenvalues for Operator Matrices Arising in Quantum Mechanics. «ACTA NUUz», [S. l.], v. 2, n. 2.1, p. 41–48, 2026. Disponível em: http://journals.nuu.uz/index.php/actanuuz/article/view/11803. Acesso em: 30 apr. 2026.