%0 Journal Article %A A. Pełczyński %T Universal bases %J Studia Mathematica %D 1969 %P 247-268 %V 32 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-32-3-247-268/ %R 10.4064/sm-32-3-247-268 %G en %F 10_4064_sm_32_3_247_268