Sign changing bubble tower solutions in a slightly subcritical semilinear Dirichlet problem Angela Pistoia; Tobias Weth — 2007 Annales de l'I.H.P. Analyse non linéaire
Three nodal solutions of singularly perturbed elliptic equations on domains without topology Thomas Bartsch; Tobias Weth — 2005 Annales de l'I.H.P. Analyse non linéaire