@article{TMF_2019_198_2_a2,
     author = {G. F. Helminck and V. A. Poberezhny and S. V. Polenkova},
     title = {Strict versions of integrable hierarchies in pseudodifference operators and the~related {Cauchy} problems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {225--245},
     publisher = {mathdoc},
     volume = {198},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2019_198_2_a2/}
}