CHAPOVSKY, Yu. A. On the inverse spectral problem for a commutative field of operator-valued Jacobi matrices. Methods of Functional Analysis and Topology, [S. l.], v. 8, n. 1, p. 14–22, 2002. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/172. Acesso em: 18 dec. 2025.