John M. Lee und Thomas H. Parker: The Yamabe problem. In: Bulletin (New Series) of the American Mathematical Society. Band17, Nr.1, 1987, S.37–91, doi:10.1090/S0273-0979-1987-15514-5.
Richard Schoen: Conformal deformation of a Riemannian metric to constant scalar curvature. In: Lehigh University (Hrsg.): Journal of Differential Geometry. Band20, Nr.2, 1984, S.479 - 495, doi:10.4310/jdg/1214439291.