JUDGMENT OF THE COURT of 22 November 1995 in Case C-443/93 (reference for a preliminary ruling from the Elengtiko Sinedrio): Ioannis Vougioukas v. Idrima Koinonikon Asphalisseon (IKA) (Interpretation and validity of Article 4 (4) of Regulation (EEC) No 1408/71 and interpretation of Articles 48 and 51 of the Treaty - Special schemes for civil servants - Greek doctor employed in a German hospital)