Contents of Volume 6 Number 4, October 1998

On the Solvability of Systems of Noncompact and Nonconvex Inclusions
Dorota Gabor - Wojciech Kryszewski
Pages 377 - 404

On Differential Inequalities for Discontinuous Nonlinear Two Point Boundary Value Problems
B. C. Dhage and G. P. Patil
Pages 405 - 412

Periodicity in Delay Equations by Direct Fixed Point mapping
T. A. Burton and BO Zhang
Pages 413 - 424

Integrability of Cubic Systems with Degenerate Infinity
Javier Chavarriga and Jaume Gine
Pages 425 - 438

A Global Hopf Bifurcation Theorem for a Free Boundary Problem
Yoonmee Ham
Pages 439 - 448

Conjugacy Criteria for a 2n - Dimensional Linear Hamiltonian System
I. Sowjanya Kumari and S. Umamaheswaram
Pages 449 - 470

Solvability of the Dirichlet - periodic Problem for a Nonlinear Parabolic Equation under Conditions on the Potential
Maria DO Rosario Grossinho and Pierpaolo Omari
Pages 471 - 494

Author Index For Volume 6
Pages 495 - 496

Contents of Volume 6
Pages 497