%0 Journal Article %A Andrzej Grzegorczyk %T On the definition of computable functionals %J Fundamenta Mathematicae %D 1955 %P 232-239 %V 42 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-42-2-232-239/ %R 10.4064/fm-42-2-232-239 %G en %F 10_4064_fm_42_2_232_239