@article{DAN_1977_232_1_a14,
     author = {L. L. Pitaevskaya and B. E. Kanishchev},
     title = {Sonic speed in nitrogen-helium mixtures under high pressures},
     journal = {Doklady Akademii Nauk},
     pages = {62--64},
     publisher = {mathdoc},
     volume = {232},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_232_1_a14/}
}