CHEN, Y.; O‘REGAN, D.; P. AGARWAL, R. Degree theory for the sum of VMO maps and maximal monotone maps. CUBO, A Mathematical Journal, [S. l.], v. 13, n. 2, p. 119–126, 2011. DOI: 10.4067/S0719-06462011000200006. Disponível em: https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1374. Acesso em: 2 may. 2024.