@article{CMUC_1978__19_3_a7,
     author = {Zaj{\'\i}\v{c}ek, Lud\v{e}k},
     title = {On the points of multivaluedness of metric projections in separable {Banach} spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {513--523},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {1978},
     mrnumber = {508958},
     zbl = {0382.46007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1978__19_3_a7/}
}