%0 Journal Article %A V. S. Geiko %T On uniqueness conditions of the travel-time curve determination of the seismic wave %J Doklady Akademii Nauk %D 1980 %P 74-78 %V 253 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_253_1_a16/ %G ru %F DAN_1980_253_1_a16