%0 Journal Article %A V. Z. Ryaboy %T Anomalies of the $P^{\mathrm{M}}_{\text{ref}}(P_n)$ wave travel times and velocity inhomogeneities %J Doklady Akademii Nauk %D 1973 %P 88-91 %V 212 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_212_1_a20/ %G ru %F DAN_1973_212_1_a20