%0 Journal Article %A Homer V. Craig %T On the extensor structure of a formulation given by W. Ślebodziński %J Colloquium Mathematicum %D 1972 %P 49-54 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-26-1-49-54/ %R 10.4064/cm-26-1-49-54 %G pl %F 10_4064_cm_26_1_49_54