AGARWAL, Ravi P.; GÓRNIEWICZ, Lech; O’REGAN, Donal. Aronszajn type results for Volterra equations and inclusions. Topological Methods in Nonlinear Analysis, [S. l.], v. 23, n. 1, p. 149–159, 2004. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2004.007. Acesso em: 8 jul. 2025.