@article{JCA_2009_16_3_JCA_2009_16_3_a7,
     author = {J. Borwein and J. Vanderwerff},
     title = {Differentiability of {Conjugate} {Functions} and {Perturbed} {Minimization} {Principles}},
     journal = {Journal of convex analysis},
     pages = {707--711},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/JCA_2009_16_3_JCA_2009_16_3_a7/}
}