@article{10_14708_cm_v49i1_5274,
     author = {Ken-Ichi Mitani and Kichi-Suke Saito},
     title = {A new geometrical constant of {Banach} spaces and the uniform normal structure},
     journal = {Commentationes Mathematicae},
     pages = { 3--13},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {2009},
     doi = {10.14708/cm.v49i1.5274},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v49i1.5274/}
}