%0 Journal Article %A I. V. Kavetskaya %A N. N. Sibel'din %A V. B. Stopachinskii %A V. A. Tsvetkov %T Excitation of sound pulses in liquid $^4\mathrm{He}$ during the germanium optical pumping %J Doklady Akademii Nauk %D 1979 %P 559-562 %V 244 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_244_3_a9/ %G ru %F DAN_1979_244_3_a9