1. Lectures on Elliptic Boundary Value Problems
2. A uniqueness theorem for nonlinear elliptic boundary value problems;Amann;Arch. Ration. Mech. Anal.,1972
3. Some applications of monotone operator theory to resonance problems;Amann;Nonlinear Anal., Theory Methods Appl.,1979
4. Elliptic boundary value problems involving measures: Existence, regularity, and multiplicity;Amann;Adv. Differ. Equ.,1998
5. Restriction of maximal monotone operator to closed linear subspace;Asakawa;TRU Math.,1987