@article{MS2_1965__17_165921,
     author = {Arne Bronsted},
     title = {Convex {Sets} and {Chebyshev} {Sets.}},
     journal = {Mathematica Scandinavica},
     pages = {5--16},
     year = {1965},
     volume = {17},
     url = {http://geodesic.mathdoc.fr/item/MS2_1965__17_165921/}
}