@article{DAN_1977_236_1_a14,
     author = {V. P. Goncharov and V. A. Krasil'nikov and V. I. Pavlov},
     title = {On the introduction of canonical variables into equations of perfect liquid hydrodynamics in the general relativity theory},
     journal = {Doklady Akademii Nauk},
     pages = {61--64},
     publisher = {mathdoc},
     volume = {236},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_236_1_a14/}
}