Contents of Volume 8, Number 3/4 July/October 2000

Periodic and Almost-Periodic Solutions for Some Delay Integral Equations in a Hilbert Space
E. AIT DADS, K. EZZINBI AND O. ARINO
Pages 193 - 212

Oscillation of Delay Differential Equations with Piecewise Constant Argument
ZHIGUO LUO AND JIANHUA SHEN
Pages 213 - 226

FOZI M. DANNAN, M.M.A. EL-SHEIKH, A.A. SOLIMAN AND M.H. ABD ALLA -
$\varphi_{0}$ - Stability for Impulsive Systems of Differential Equations
Pages 227- 242

Periodic Solutions of Duffing Equations with Delay
SHIWANG MA, ZHICHENG WANG AND JIANSHE YU
Pages 243 - 256

Positively Invariant Sets in Banach Spaces and Applications to Control by Order Constraints and Retarded Differential Equations
S. BOULITE AND H. BOUSLOUS
Pages 257 - 280

On the Method of Upper and Lower Solutions in Banach Spaces under Carathéodory Assumptions
BARBARA BIANCONI, CRISTINA MARCELLI AND MARCELLO RAGNI
Pages 281 - 300

A Second Order Sliding Control Approach for Vibration Reduction
A. CAVALLO, P. NISTRI AND E. ZOLI
Pages 301 - 324

AUTHOR INDEX FOR VOLUME 8
Pages 325 - 326

CONTENTS OF VOLUME 8
Pages 327