@article{JCA_2005_12_2_JCA_2005_12_2_a1,
     author = {F. Leonetti and F. Siepe},
     title = {Maximum {Principle} for {Vector} {Valued} {Minimizers}},
     journal = {Journal of convex analysis},
     pages = {267--278},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/JCA_2005_12_2_JCA_2005_12_2_a1/}
}