@article{COCV_2016__22_2_338_0,
     author = {Bandyopadhyay, Saugata and Sil, Swarnendu},
     title = {Exterior convexity and classical calculus of variations},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {338--354},
     publisher = {EDP-Sciences},
     volume = {22},
     number = {2},
     year = {2016},
     doi = {10.1051/cocv/2015007},
     mrnumber = {3491773},
     zbl = {1343.49022},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/cocv/2015007/}
}