A Semilinear Fourth Order Elliptic Problem with Exponential Nonlinearity. - Gianni Arioli; Filippo Gazzola; Hans-Christoph Grunau; Enzo Mitidieri (SIAM J. Math. Anal., 2005)

Stability and Symmetry in the Navier Problem for the One-Dimensional Willmore Equation. - Klaus Deckelnick; Hans-Christoph Grunau (SIAM J. Math. Anal., 2008)