Weak solutions for the p -Laplacian with a nonlinear boundary condition at resonance. Martínez, Sandra; Rossi, Julio D. — 2003 Electronic Journal of Differential Equations (EJDE) [electronic only]
Isolation and simplicity for the first eigenvalue of the p -Laplacian with a nonlinear boundary condition. Martínez, Sandra; Rossi, Julio D. — 2002 Abstract and Applied Analysis