%0 Journal Article
%A V. A. Romanov
%T Nonequivalence of Various Definitions of Differentiability Directions for Vector Measures
%J Matematičeskie zametki
%D 2002
%P 528-534
%V 72
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2002_72_4_a5/
%G ru
%F MZM_2002_72_4_a5