Boundedness of the negative part of biharmonic Green's functions under Dirichlet boundary conditions in general domains

Grunau, Hans-Christoph; Robert, Frédéric

Comptes Rendus. Mathématique, Volume 347 (2009) p. 163-166

The Paneitz equation in hyperbolic space

Grunau, Hans-Christoph; Ould Ahmedou, Mohameden; Reichel, Wolfgang

Annales de l'I.H.P. Analyse non linéaire, Volume 25 (2008) p. 847-864

Optimal conditions for anti-maximum principles

Grunau, Hans-Christoph; Sweers, Guido

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Volume 30 (2001) p. 499-513