1. Handbook of Mathematical Functions;Abramovitz,1972
2. Sobolev Spaces;Adams,2003
3. Function Spaces and Potential Theory;Adams,1996
4. Non-negative perturbations of non-negative self-adjoint operators;Adamyan;Methods Funct. Anal. Topology,2007
5. The inhomogeneous Dirichlet problem for Δ2 in Lipschitz domains;Adolfsson;J. Funct. Anal.,1998