@article{CMUC_1990__31_3_a6,
     author = {Bana\'s, J\'ozef and Hajnosz, Andrzej and W\k{e}drychowicz, Stanis{\l}aw},
     title = {On convexity and smoothness of {Banach} space},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {445--452},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1990},
     mrnumber = {1078479},
     zbl = {0723.46010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_3_a6/}
}