%0 Journal Article %A A. Janiczak %T On the reducibility of decision problems %J Colloquium Mathematicum %D 1954 %P 33-36 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-3-1-33-36/ %R 10.4064/cm-3-1-33-36 %G en %F 10_4064_cm_3_1_33_36