%0 Journal Article
%A V. I. Lebedev
%T Four-point schemes of increased accuracy
%J Doklady Akademii Nauk
%D 1962
%P 526-529
%V 142
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_142_3_a6/
%G ru
%F DAN_1962_142_3_a6