@article{MZ_1955__63_169544,
     author = {Richard Rado},
     title = {Minimal {Points} of {Convex} {Sets} in {Sequence} {Spaces.}},
     journal = {Mathematische Zeitschrift},
     pages = {486--495},
     publisher = {mathdoc},
     volume = {63},
     year = {1955},
     zbl = {0070.11304},
     url = {http://geodesic.mathdoc.fr/item/MZ_1955__63_169544/}
}