OLEFIR, E. I.; TARASENKO, A. A. On a class of finite-dimensional perturbations of dissipative Volterra operators. Methods of Functional Analysis and Topology, [S. l.], v. 11, n. 1, p. 65–72, 2005. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/268. Acesso em: 16 dec. 2025.