@phdthesis{BJHTUP11_1987__0203_,
     author = {Cossart, Vincent},
     title = {Poly\`edre caract\'eristique d'une singularit\'e},
     series = {Th\`eses d'Orsay},
     publisher = {Universit\'e de Paris-Sud Centre d'Orsay},
     number = {203},
     year = {1987},
     language = {mul},
     url = {http://www.numdam.org/item/BJHTUP11_1987__0203_/}
}