@article{MAN_1975__214_162690,
     author = {Helmut Strasser},
     title = {Convex {Functions} on {Dual} {Systems.}},
     journal = {Mathematische Annalen},
     pages = {199--204},
     year = {1975},
     volume = {214},
     zbl = {0299.46011},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__214_162690/}
}