ANTONIOUK, A. Vict.; ANTONIOUK, A. Val. Higher-Order Relations for Derivatives of Nonlinear Diffusion Semigroups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 53, n. 1, p. 117–122, 2001. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4227. Acesso em: 5 dec. 2025.