Existence Theorems for Lp - Solutions of Integral Equations in Banach Spaces Stanislaw Szufla (1986) Publications de l'Institut Mathématique
Existence theory for nonlinear Volterra integral and differential equations. Sikorska, Aneta (2001) Journal of Inequalities and Applications [electronic only]
Existence, uniqueness and successive approximations for a class of integral-functional equations. M. Kwapisz, J. Turo (1976) Aequationes mathematicae
Explicit estimates for some mixed integral inequalities. Pachpatte, Baburao G. (2010) Electronic Journal of Differential Equations (EJDE) [electronic only]
Extreme solutions of nonlinear, second order integro-differential equations in Banach spaces. Guo, Dajun (1995) Journal of Applied Mathematics and Stochastic Analysis