%0 Journal Article
%A S. I. Trifonov
%T Analytic families of differential equations on two-dimensional
%J Doklady Akademii Nauk
%D 1993
%P 559-562
%V 331
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1993_331_5_a8/
%G ru
%F DAN_1993_331_5_a8