Opinion of Mr Advocate General Darmon delivered on 5 November 1991

1 Original language: French.

2 Judgment in Joined Cases 35/82 and 36/82 Monoa and Jharuan v Situe of the Netherlands [1982] ECR 3723, paragraphs 16 and 17; see also judgments in Case 155/78 Regina v Saunders [1979] ECR 1129, paragraph 11, Case 180/83 Moser v Land Badcn-Württemberg [1984] ECR 2539, paragraph 15, Case 298/84 Iono v Azienda Autonoms della ferrovie dello Stato [19861 ECR 247, paragraph 14, Case 147/87 Zaoui v CRMAIF [1987] ECR 5511, paragraph 15.

3 Judgments in Casc 115/78 Knoon v Secretary of State for Economic Anain [1979] ECR 399, paragraph 24, Case 271/82 Auer v Minútete Public [1983] ECR 2727, Case 292/86 Cullung v ConseUs de rOrdre des Avocats du Barreau de Colmar et de Sårerne [1988] ECR 111, paragraphs IC to 13, Case 130/88 Van de Billy Staatssecretaris ran Economische Zaken [1989] ECR 3039.

4 Judgments in Case 305/87 Commission v Greece [1919] ECK 1461, paragraph I), Case C-10/90 Mastio v Bundes-Knappschaft [1991] ECR I-1119.

5 See judgment in Case C-41/90 Hüfner and Elser v Macroton Gesellschaft für Datenerfassungssysteme mit beschrankter Haftung [1991] ECR I-1979 paragraphs 35 to 40, for a similar situation in relation to freedom to provide services.