@article{MS2_1992__70_1_167187,
     author = {Otte Hustad},
     title = {Upper {Semi-Continuity} of {Convex} {Functions} and {Openness} of {Affine} {Maps.}},
     journal = {Mathematica Scandinavica},
     pages = {43--77},
     year = {1992},
     volume = {70},
     number = {1},
     zbl = {0780.46010},
     url = {http://geodesic.mathdoc.fr/item/MS2_1992__70_1_167187/}
}