@article{SM_1973_21_3_a1,
     author = {Yu. I. Manin},
     title = {Periods of parabolic forms and $p$-adic {Hecke} series},
     journal = {Sbornik. Mathematics},
     pages = {371--393},
     year = {1973},
     volume = {21},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1973_21_3_a1/}
}