Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1973__32_166297, author = {V\'aclav Zizler}, title = {On {Some} {Extremal} {Problems} in {Banach} {Spaces.}}, journal = {Mathematica Scandinavica}, pages = {214--224}, publisher = {mathdoc}, volume = {32}, year = {1973}, zbl = {0269.46014}, url = {http://geodesic.mathdoc.fr/item/MS2_1973__32_166297/} }
Václav Zizler. On Some Extremal Problems in Banach Spaces.. Mathematica Scandinavica, Tome 32 (1973), pp. 214-224. http://geodesic.mathdoc.fr/item/MS2_1973__32_166297/