Judgment of the Court (Third Chamber) 10 July 1991

In Joined Cases C-90/90 and C-91/90, REFERENCE to the Court under Article 177 of the EEC Treaty by the Conseil d'Etat du Grand-Duché de Luxembourg (State Council of the Grand Duchy of Luxembourg) for a preliminary ruling in the proceedings pending before that court between

THE COURT (Third Chamber), composed of: J. C. Moitinho de Almeida, President of the Chamber, F. Grévisse and M. Zuleeg, Judges, Advocate General: M. Darmon, Registrar: J. A. Pompe, Deputy Registrar,

after considering the observations submitted on behalf of the plaintiffs in the main proceedings, by Fernand Entringer, Avocat-Avoué, of the Luxembourg Bar, the Luxembourg Government, by Fernand Hoffstetter, Conseiller de Direction Première Classe at the Ministry of Agriculture, Viticulture and Rural Development, acting as Agent, the Commission of the European Communities, by Patrick Hetsch, a member of its Legal Service, acting as Agent,

having regard to the Report for the Hearing,

after hearing oral argument on behalf of the plaintiffs, the defendant and the Commission at the hearing on 7 March 1991,

after hearing the Opinion of the Advocate General at the sitting on 2 May 1991,

gives the following

Judgment

Costs

1 Language of the case: French.