%0 Journal Article %A A. Sh. Faitelson %A M. I. Yurkina %T The influence of secular variations of gravity force on the results of repeated levelling %J Doklady Akademii Nauk %D 1973 %P 1274-1275 %V 213 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_213_6_a11/ %G ru %F DAN_1973_213_6_a11