@article{701391,
     title = {Infinite dimensional Lie algebras: representations and applications},
     booktitle = {Proceedings of the Winter School "Geometry and Physics"},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1985},
     pages = {73-107},
     mrnumber = {MR0853132},
     zbl = {0593.17014},
     url = {http://dml.mathdoc.fr/item/701391}
}

Goddard, P. Infinite dimensional Lie algebras: representations and applications, dans Proceedings of the Winter School "Geometry and Physics", GDML_Books,  (1985), pp. 73-107. http://gdmltest.u-ga.fr/item/701391/