On the existence of solutions to some nonlinear integrodifferential equations with delays. Purnaras, I.K. — 2007 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
A note on the existence of solutions to some nonlinear functional integral equations. Purnaras, I.K. — 2006 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
On linear Volterra difference equations with infinite delay. Philos, Ch.G.; Purnaras, I.K. — 2006 Advances in Difference Equations [electronic only]
An asymptotic result for some delay difference equations with continuous variable. Philos, Ch.G.; Purnaras, I.K. — 2004 Advances in Difference Equations [electronic only]
Oscillations in linear difference equations with variable coefficients. Philos, Ch.G.; Purnaras, I.K. — 1991 Journal of Applied Mathematics and Stochastic Analysis