%0 Journal Article %A Hilary Putnam %T An unsolvable problem in number theory %J Matematika %D 1964 %P 55-68 %V 8 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAT_1964_8_5_a4/ %G ru %F MAT_1964_8_5_a4