%0 Journal Article
%A Ewert, Janina
%A Ponomarev, S.P.
%T On essential -variation.
%J Sibirskij Matematicheskij Zhurnal
%D 2006
%P 473
%V 47
%N 2
%I mathdoc
%U https://geodesic-test.mathdoc.fr/item/SMZ_2006__47_2_53185/
%G en
%F SMZ_2006__47_2_53185