%0 Journal Article
%A L. G. Valiullina
%A Kh. K. Ishkin
%A R. I. Marvanov
%T Spectral asymptotics for fourth order differential operator with two turning points
%J Ufa mathematical journal
%D 2018
%P 24-39
%V 10
%N 4
%U http://geodesic.mathdoc.fr/item/UFA_2018_10_4_a2/
%G en
%F UFA_2018_10_4_a2