%0 Journal Article %A S. N. Naboko %T Nontangential boundary values of operator $R$-functions in a half-plane %J Algebra i analiz %D 1989 %P 197-222 %V 1 %N 5 %U http://geodesic.mathdoc.fr/item/AA_1989_1_5_a7/ %G ru %F AA_1989_1_5_a7