%0 Journal Article
%A M. M. Popov
%T On Morse index for geodesic lines on smooth surfaces imbedded in~$\mathbb R^3$
%J Zapiski Nauchnykh Seminarov POMI
%D 2018
%P 211-224
%V 471
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2018_471_a12/
%G ru
%F ZNSL_2018_471_a12