%0 Journal Article %A N. Ya. Kirpichnikova %A M. M. Popov %A I. Pšenčik %T An algorithm for computation of the second term of the ray method series in an inhomogeneous isotropic medium %J Zapiski Nauchnykh Seminarov POMI %D 1994 %P 73-93 %V 210 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1994_210_a7/ %G ru %F ZNSL_1994_210_a7