HIRIART-URRUTY, J. .- b. Lipschitz $r$-continuity of the approximative subdifferential of a convex function. MATHEMATICA SCANDINAVICA, [S. l.], v. 47, p. 123–134, 1980. DOI: 10.7146/math.scand.a-11878. Disponível em: https://www.mscand.dk/article/view/11878. Acesso em: 24 nov. 2024.