@article{IM2_1970_4_3_a4,
     author = {I. I. Pyatetskii-Shapiro},
     title = {Induced rings and the reduction of fields of {Abelian} modular functions},
     journal = {Izvestiya. Mathematics },
     pages = {536--550},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a4/}
}