%0 Journal Article %A V. Kh. Khakhanyan %T The comparative strength of variants of Church's thesis at the level of set theory %J Doklady Akademii Nauk %D 1980 %P 1070-1074 %V 252 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_252_5_a11/ %G ru %F DAN_1980_252_5_a11