@article{RM_2003_58_2_a15,
     author = {O. V. Schwarzman},
     title = {On an example of {Mumford} and the factorial property of algebras of automorphic forms for planar groups of genus~0},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {390--391},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2003_58_2_a15/}
}