%0 Journal Article %A M. I. Kanovitch %T Dekker's construction and effective nonrecursiveness %J Doklady Akademii Nauk %D 1975 %P 1028-1030 %V 222 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_222_5_a3/ %G ru %F DAN_1975_222_5_a3