@article{TMF_2017_192_3_a3,
     author = {G. F. Helminck},
     title = {An~integrable hierarchy including {the~AKNS} hierarchy and its strict version},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {444--458},
     year = {2017},
     volume = {192},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2017_192_3_a3/}
}