%0 Journal Article %A G. P. Gubanov %T The accuracy of the representation of continuous periodic functions of two variables by singular integrals %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1969 %P 25-33 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1969_12_a3/ %G ru %F IVM_1969_12_a3