%0 Journal Article %A Grażyna Toporowska %T The minimal-norm problem and Pontriagin's maximum principle for Banach spaces, II %J Studia Mathematica %D 1970 %P 105-110 %V 35 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-35-2-105-110/ %R 10.4064/sm-35-2-105-110 %G en %F 10_4064_sm_35_2_105_110