Backward Euler type methods for parabolic integro-differential equations in Banach space N. Yu. Bakaev, S. Larsson, V. Thomée (1998) ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
Behaviour of solutions of an integral equation Jerzy Muszyński (1976) Časopis pro pěstování matematiky
Bounds for certain nonlinear dynamic inequalities on time scales. Li, Wei Nian, Han, Maoan (2009) Discrete Dynamics in Nature and Society