PAVLENKO, V. N. Control of singular distributed parabolic systems with discontinuous nonlinearities. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 6, p. 729–736, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5700. Acesso em: 5 dec. 2025.