Geodesic
Critical Point Theory for Nonsmooth Energy Functionals and Applications
Acta mathematica Universitatis Comenianae, Tome 71 (2002) no. 2 
N. Halidias. Critical Point Theory for Nonsmooth Energy 
Functionals  and Applications. Acta mathematica Universitatis Comenianae, Tome 71 (2002) no. 2. http://geodesic.mathdoc.fr/item/AMUC_2002_71_2_a2/
@article{AMUC_2002_71_2_a2,
     author = {N. Halidias},
     title = {Critical {Point} {Theory} for {Nonsmooth} {Energy} {
Functionals}  and {Applications}},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {2002},
     volume = {71},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2002_71_2_a2/}
}
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Functionals  and Applications
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Functionals  and Applications
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Voir la notice de l'article provenant de la source Comenius University

In this paper we prove an abstract result about the minimization of nonsmooth functionals. Then we obtain some existence results for Neumann problems with discontinuities.