Some results concerning second and third order neutral delay differential equations with piecewise constant argument Garyfalos Papaschinopoulos; John Schinas — 1994 Czechoslovak Mathematical Journal
Criteria for an exponential dichotomy of difference equations Garyfalos Papaschinopoulos; John Schinas — 1985 Czechoslovak Mathematical Journal
Structural stability of linear discrete systems via the exponential dichotomy Jaroslav Kurzweil; Garyfalos Papaschinopoulos — 1988 Czechoslovak Mathematical Journal
Some roughness results concerning reducibility for linear difference equations. Papaschinopoulos, Garyfalos — 1988 International Journal of Mathematics and Mathematical Sciences
On a class of third order neutral delay differential equations with piecewise constant argument. Papaschinopoulos, Garyfalos — 1994 International Journal of Mathematics and Mathematical Sciences