@article{CMUC_1989__30_4_a6,
     author = {Baronti, Marco and Papini, Pier Luigi},
     title = {Bicontractive projections in sequence spaces and a few related kinds of maps},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {665--673},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {1989},
     mrnumber = {1045895},
     zbl = {0698.47005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a6/}
}