On solutions continuously differentiable on $R^+$ for systems of linear functional differential equations with linearly transformed argument. Neliniini Kolyvannya, [S. l.], v. 10, n. 3, p. 322–327, 2007. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/441. Acesso em: 21 jan. 2026.