@article{TMF_2006_149_2_a0,
     author = {V. G. Marikhin and V. V. Sokolov},
     title = {Pairs of commuting {Hamiltonians} quadratic in the~momenta},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {147--160},
     year = {2006},
     volume = {149},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2006_149_2_a0/}
}