KORZYUK, Victor; KOVNATSKAYA, Olga. Weak solutions of boundary value problems in nontube domains for fourth-order equations of composite type. Mathematical Modelling and Analysis, [S. l.], v. 16, n. 3, p. 498–508, 2011. DOI: 10.3846/13926292.2011.603167. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/5557. Acesso em: 9 may. 2025.