@article{IM2_1982_19_2_a4,
     author = {B. A. Dubrovin},
     title = {The {Kadomtsev--Petviashvili} equation and the relations between the periods of holomorphic differentials on {Riemann} surfaces},
     journal = {Izvestiya. Mathematics },
     pages = {285--296},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1982},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1982_19_2_a4/}
}