On the spectcral theory of elliptic differential operators. I. F.E. BROWDER — 1961 Mathematische Annalen
Nonlinear Variational Inequalities and Maximal Monotone Mappings in Banach Spaces. F.E. BROWDER — 1969 Mathematische Annalen
The Fixed Point Theory of Multi-valued Mappings in Topological Vector Spaces. F.E. BROWDER — 1968 Mathematische Annalen