@article{FAA_2003_37_2_a8,
     author = {O. V. Schwarzman},
     title = {Free {Algebras} of {Automorphic} {Forms} on the {Upper} {Half-Plane}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {81--89},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2003_37_2_a8/}
}