@article{JCA_2006_13_3_JCA_2006_13_3_a12,
     author = {M. Fabian and P. D. Loewen and X. Wang},
     title = {\ensuremath{\varepsilon}-Fr\'echet {Differentiability} of {Lipschitz} {Functions} and {Applications}},
     journal = {Journal of convex analysis},
     pages = {695--709},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/JCA_2006_13_3_JCA_2006_13_3_a12/}
}