@article{IM2_1991_37_2_a6,
     author = {S. P. Tsarev},
     title = {The geometry of {Hamiltonian} systems of hydrodynamic type. {The} generalized hodograph method},
     journal = {Izvestiya. Mathematics },
     pages = {397--419},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1991_37_2_a6/}
}