@article{COCV_2013__19_3_701_0,
     author = {Volle, M. and Hiriart-Urruty, J.-B. and Z\u{a}linescu, C.},
     title = {When some variational properties force convexity},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {701--709},
     publisher = {EDP-Sciences},
     volume = {19},
     number = {3},
     year = {2013},
     doi = {10.1051/cocv/2012029},
     mrnumber = {3092358},
     zbl = {1277.46042},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2012029/}
}