@article{ZNSL_1982_115_a10,
     author = {P. P. Kulish},
     title = {Action-angle variables for a~multicomponent nonlinear {Schr\"odinger} equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {126--136},
     publisher = {mathdoc},
     volume = {115},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1982_115_a10/}
}