%0 Journal Article
%A Yu. V. Pokorny
%A R. Mustafokulov
%T On the positive invertibility of some boundary value problems for a fourth-order equation
%J Differencialʹnye uravneniâ
%D 1997
%P 1358-1365
%V 33
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1997_33_10_a8/
%G ru
%F DE_1997_33_10_a8