ADVISORY OPINION OF THE COURT of 10 December 1998 in Case E-9/97 (Request for an advisory opinion from Reykjavík City Court): Erla María Sveinbjörnsdóttir v. the Government of Iceland (Council Directive 80/987/EEC - Incorrect implementation of a directive - Liability of an EFTA State) (Pursuant to Article 27(5) of the Rules of Procedure only the English and Icelandic texts are authentic)