%0 Journal Article %A Yu. G. Ryzhkov %A N. N. Karnaushenko %T Measurement of deep currents in the Black sea with the aid of an ultrasonic buoy of neutral buoyancy %J Doklady Akademii Nauk %D 1961 %P 74-76 %V 141 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_141_1_a18/ %G ru %F DAN_1961_141_1_a18