VEL’HACH, A.V. Continuously differentiable solutions of one boundary value problem for a systems of linear difference differential equations of neutral type. Carpathian Mathematical Publications, [S. l.], v. 7, n. 1, p. 28–37, 2015. DOI: 10.15330/cmp.7.1.28-37. Disponível em: https://scijournals.pnu.edu.ua/index.php/cmp/article/view/1379. Acesso em: 24 apr. 2024.