%0 Journal Article
%A A. G. Megrabov
%T Conservation laws and other formulas for families of rays and wavefronts and for the eikonal equation
%J Sibirskij žurnal vyčislitelʹnoj matematiki
%D 2019
%P 483-497
%V 22
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SJVM_2019_22_4_a6/
%G ru
%F SJVM_2019_22_4_a6