@article{IM2_1971_5_3_a4,
     author = {I. I. Pyatetskii-Shapiro and I. R. Shafarevich},
     title = {A~Torelli theorem for algebraic surfaces of type~$K3$},
     journal = {Izvestiya. Mathematics},
     pages = {547--588},
     year = {1971},
     volume = {5},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1971_5_3_a4/}
}