%0 Journal Article %A P. E. Sobolevskii %T Application of the method of fractional powers of operators to the study of the Navier--Stokes equations %J Doklady Akademii Nauk %D 1964 %P 50-53 %V 155 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_155_1_a12/ %G ru %F DAN_1964_155_1_a12