@article{TMF_2010_165_3_a3,
     author = {G. F. Helminck and A. G. Helminck and A. V. Opimakh},
     title = {The~relative frame bundle of an~infinite-dimensional flag variety and solutions of integrable hierarchies},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {440--471},
     publisher = {mathdoc},
     volume = {165},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2010_165_3_a3/}
}