@article{10_4153_CJM_1999_024_x,
     author = {Fabbri, Marc A. and Okoh, Frank},
     title = {Representations of {Virasoro-Heisenberg} {Algebras} and {Virasoro-Toroidal} {Algebras}},
     journal = {Canadian journal of mathematics},
     pages = {523--545},
     year = {1999},
     volume = {51},
     number = {3},
     doi = {10.4153/CJM-1999-024-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-024-x/}
}