TY  - JOUR
AU  - A. G. Megrabov
TI  - Conservation laws and other formulas for families of rays and wavefronts and for the eikonal equation
JO  - Sibirskij žurnal vyčislitelʹnoj matematiki
PY  - 2019
SP  - 483
EP  - 497
VL  - 22
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SJVM_2019_22_4_a6/
LA  - ru
ID  - SJVM_2019_22_4_a6
ER  -