@article{MM2_1972__7_154127,
     author = {Rudolf Wegmann},
     title = {Zur {Stetigkeit} der mengenwertigen metrischen {Projektion} in endlichdimensionalen {R\"aumen.}},
     journal = {Manuscripta mathematica},
     pages = {375--386},
     publisher = {mathdoc},
     volume = {7},
     year = {1972},
     zbl = {0237.46018},
     url = {http://geodesic.mathdoc.fr/item/MM2_1972__7_154127/}
}