JUDGMENT OF THE COURT (Sixth Chamber) of 16 July 1998 in Case C-235/95 (reference for a preliminary ruling from the Cour d'Appel, Douai): AGS Assedic Pas-de-Calais v. François Dumon and Maître Froment, liquidator and representative of Établissements Pierre Gilson (Social policy - Protection of employees in the event of the insolvency of their employer - Directive 80/987/EEC - Article 4 - Direct effect - Whether national provisions fixing the ceiling for the guarantee of payment may be relied on against individuals where the Commission has not been informed)