Variational theory of set-valued Hammerstein operators in Banach function spaces. The eigenvalue problem Charles V. Coffman (1978) Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Volterra and Urysohn integral equations in Banach spaces. O'Regan, Donal (1998) Journal of Applied Mathematics and Stochastic Analysis
Volterra integral equations associated with a class of nonlinear operators in Hilbert spaces Enzo Mitidieri, Mario Tosques (1986/1987) Annales de la Faculté des sciences de Toulouse : Mathématiques
Volterra integrodifferential equations of parabolic type of higher order in time in L p spaces Davide Guidetti (2000) Rendiconti del Seminario Matematico della Università di Padova