@article{JCA_2007_14_1_JCA_2007_14_1_a6,
     author = {E. Beutner},
     title = {On the {Closedness} of the {Sum} of {Closed} {Convex} {Cones} in {Reflexive} {Banach} {Spaces}},
     journal = {Journal of convex analysis},
     pages = {99--102},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/JCA_2007_14_1_JCA_2007_14_1_a6/}
}