Existence of solutions and controllability of nonlinear integro-differential systems in Banach spaces. Balachandran, K.; Park, J.Y. — 2003 Mathematical Problems in Engineering
Existence of solutions of a class of abstract second order nonlinear integrodifferential equations. Balachandran, K.; Park, J.Y. — 2002 Journal of Applied Mathematics and Stochastic Analysis
Nonlinear functional integrodifferential equations in Hilbert space. Park, J.Y.; Lee, S.Y.; Lee, M.J. — 1999 International Journal of Mathematics and Mathematical Sciences