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@article{MS2_1968__23_166066, author = {T.B. Andersen and E.T. Poulsen}, title = {On {Semi-Extremal} {Subsets} of {Convex} {Sets.}}, journal = {Mathematica Scandinavica}, pages = {167--168}, publisher = {mathdoc}, volume = {23}, year = {1968}, zbl = {0181.13301}, url = {http://geodesic.mathdoc.fr/item/MS2_1968__23_166066/} }
T.B. Andersen; E.T. Poulsen. On Semi-Extremal Subsets of Convex Sets.. Mathematica Scandinavica, Tome 23 (1968), pp. 167-168. http://geodesic.mathdoc.fr/item/MS2_1968__23_166066/