@article{JCA_2020_27_2_JCA_2020_27_2_a4,
     author = {P. P\'erez-Aros and D. Salas and E. Vilches},
     title = {On {Formulae} for the {Ioffe} {Geometric} {Subdifferential} of a {Supremum} {Function}},
     journal = {Journal of convex analysis},
     pages = {487--508},
     year = {2020},
     volume = {27},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2020_27_2_JCA_2020_27_2_a4/}
}