@article{MZ_1984__185_173382,
     author = {Nolan R. Wallach and Alvany Rocha-Caridi},
     title = {Characters of {Irreducible} {Representations} of the {Virasoro} {Algebra.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--22},
     publisher = {mathdoc},
     volume = {185},
     year = {1984},
     zbl = {0503.17008},
     url = {http://geodesic.mathdoc.fr/item/MZ_1984__185_173382/}
}