1. In his Opinions in Case 21/76 Bier v Mines de Potasse d' Alsace (11) and Case 814/79 Netherlands v Rueffer (12) Mr Advocate General Warner had occasion to scrutinize the various language versions of the provision.

Dans ses conclusions dans les affaires Mines de potasse d' Alsace (11) et Rueffer (12), l' avocat général M. Warner a eu l' occasion d' analyser les différentes versions linguistiques de la disposition.