MUZYCZKA, Zofia. On functional-differential equations with advancing argument. Annales Mathematicae Silesianae, [S. l.], v. 2, p. 60–64, 1986. Disponível em: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14322. Acesso em: 1 jul. 2025.