@book{AST_2001__272_,
     author = {Collectif},
     title = {Geometrization of $3$-orbifolds of cyclic type},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {272},
     year = {2001},
     language = {mul},
     url = {http://archive.numdam.org/item/AST_2001__272_/}
}