%0 Journal Article
%A V. V. Arestov
%A M. A. Filatova
%T Approximation of differentiation operator in the space $L_2$ on semiaxis
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 2013
%P 3-12
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_2013_5_a0/
%G ru
%F IVM_2013_5_a0