%0 Journal Article %A R. P. Tarasov %T Ray equations for arbitrarily curved cylinders with refractive index varying according to the cross-section, and some cases of their integration %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1976 %P 1539-1550 %V 16 %N 6 %U http://geodesic.mathdoc.fr/item/ZVMMF_1976_16_6_a16/ %G ru %F ZVMMF_1976_16_6_a16