@article{CMH_1971__46_139458,
     author = {Victor Klee and Michael Martin},
     title = {Semicontinuity of the {Face-Function} of a {Covex} {Set}},
     journal = {Commentarii mathematici Helvetici},
     pages = {1},
     publisher = {mathdoc},
     volume = {46},
     year = {1971},
     zbl = {0208.14901},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/CMH_1971__46_139458/}
}