@article{MS2_1965__16_165909,
     author = {Warren Stenberg},
     title = {On {Weak} {Separation} of {Convex} {Sets} and on {...-Ubiquitous} {Sets.}},
     journal = {Mathematica Scandinavica},
     pages = {55--74},
     publisher = {mathdoc},
     volume = {16},
     year = {1965},
     zbl = {0137.09401},
     url = {http://geodesic.mathdoc.fr/item/MS2_1965__16_165909/}
}