@article{MS2_1997__80_2_167421,
     author = {Jussi V\"ais\"al\"a},
     title = {Metric duality in {Euclidean} spaces.},
     journal = {Mathematica Scandinavica},
     pages = {249--288},
     publisher = {mathdoc},
     volume = {80},
     number = {2},
     year = {1997},
     zbl = {0886.30016},
     url = {http://geodesic.mathdoc.fr/item/MS2_1997__80_2_167421/}
}