@article{IM_1984__77_143148,
     author = {I.B. Frenkel},
     title = {Orbital theory for affine {Lie} algebras.},
     journal = {Inventiones mathematicae},
     pages = {301--352},
     publisher = {mathdoc},
     volume = {77},
     year = {1984},
     zbl = {0548.17007},
     url = {http://geodesic.mathdoc.fr/item/IM_1984__77_143148/}
}