@article{MAN_1983__263_163746,
     author = {G. Godini},
     title = {On a {Problem} of {H.} {Berens.}},
     journal = {Mathematische Annalen},
     pages = {279--282},
     publisher = {mathdoc},
     volume = {263},
     year = {1983},
     zbl = {0534.41022},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__263_163746/}
}