%0 Journal Article
%A E. I. Bravyi
%T On necessary conditions for the negativity of the Green function for a~two-point problem
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 2001
%P 12-22
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_2001_6_a1/
%G ru
%F IVM_2001_6_a1