Some uniqueness result on controllability for functional semilinear differential equations in Fréchet spaces. Neliniini Kolyvannya, [S. l.], v. 6, n. 3, p. 291–308, 2003. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/268. Acesso em: 22 jan. 2026.