@article{SIGMA_2006_2_a63,
     author = {Sergei Sakovich},
     title = {On {a~{\textquotedblleft}Mysterious{\textquotedblright}} {Case} of {a~Quadratic} {Hamiltonian}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2006},
     volume = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2006_2_a63/}
}