@article{VMUMM_1993_3_a12,
     author = {R. Gatignol and N. Sibgatullin},
     title = {Canonical variables and the {Hamilton} principle for a stratified heavy fluid},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {72--76},
     publisher = {mathdoc},
     number = {3},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1993_3_a12/}
}