%0 Journal Article
%A P. Ya. Kirik
%T The orthogonality of the derivatives of the eigenforms of the vibrations of an inhomogeneous rod
%J Differencialʹnye uravneniâ
%D 1969
%P 1899-1900
%V 5
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1969_5_10_a18/
%G ru
%F DE_1969_5_10_a18