@article{RCP25_1988__39__69_0,
     author = {Itzykson, Claude},
     title = {Level {One} {Kac-Moody} {Characters} and {Modular} {Invariance}},
     journal = {Les rencontres physiciens-math\'ematiciens de Strasbourg -RCP25},
     note = {talk:5},
     pages = {69--84},
     publisher = {Institut de Recherche Math\'ematique Avanc\'ee - Universit\'e Louis Pasteur},
     volume = {39},
     year = {1988},
     language = {en},
     url = {http://www.numdam.org/item/RCP25_1988__39__69_0/}
}