Existence theorems for a variant of Hammerstein's integral equation M. Joshi (1975) Commentationes Mathematicae Universitatis Carolinae
Note on the Fredholm alternative for nonlinear operators Svatopluk Fučík (1971) Commentationes Mathematicae Universitatis Carolinae
Some existence theorems for nonlinear equations of Hammerstein type (Preliminary communication) Josef Daneš (1972) Commentationes Mathematicae Universitatis Carolinae