DERKACH, V. A.; SUKHORUKOVA, O. $A$-regular–$A$-singular factorizations of generalized $J$-inner matrix functions. Methods of Functional Analysis and Topology, [S. l.], v. 23, n. 3, p. 231–251, 2017. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/667. Acesso em: 15 dec. 2025.