@incollection{AST_2008__322__23_0,
     author = {Chang, Sun-Yung Alice and Yang, Paul C.},
     title = {The $Q$-curvature equation in conformal geometry},
     booktitle = {G\'eom\'etrie diff\'erentielle, physique math\'ematique, math\'ematiques et soci\'et\'e (II) - Volume en l'honneur de Jean-Pierre Bourguignon},
     editor = {Hijazi Oussama},
     series = {Ast\'erisque},
     pages = {23--38},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {322},
     year = {2008},
     mrnumber = {2521652},
     zbl = {1182.53032},
     language = {en},
     url = {http://www.numdam.org/item/AST_2008__322__23_0/}
}