Steklov Eigenproblems and the Representation of Solutions of Elliptic Boundary Value Problems - Auchmuty, Giles (Numerical functional analysis and optimization, 2005)
Keywords: A-harmonic functions; Neumann to Dirichlet operator; Primary 35P10; Robin to Dirichlet operator; Schroedinger operators; Secondary 35J20, 35J25, 49R50; Steklov eigenproblems