@article{ZNSL_2002_291_a15,
     author = {A. V. Tsiganov},
     title = {A family of integrable systems on a sphere},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {263--277},
     publisher = {mathdoc},
     volume = {291},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2002_291_a15/}
}