%0 Journal Article %A T. V. Radoslavova %T Local properties of functions and approximation by trigonometric polynomials %J Matematičeskie zametki %D 1975 %P 527-539 %V 18 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1975_18_4_a5/ %G ru %F MZM_1975_18_4_a5