Mean value inequalities are shown for functions which are sub- or super-differentiable at every point.
@article{urn:eudml:doc:44443, title = {Some remarks on sub-differential calculus.}, journal = {Revista Matem\'atica de la Universidad Complutense de Madrid}, volume = {11}, year = {1998}, pages = {269-279}, zbl = {0923.46044}, mrnumber = {MR1666473}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:44443} }
Godefroy, Gilles. Some remarks on sub-differential calculus.. Revista Matemática de la Universidad Complutense de Madrid, Tome 11 (1998) pp. 269-279. http://gdmltest.u-ga.fr/item/urn:eudml:doc:44443/