Дело C-10/71: Muller, Заключение от 1 юли 1971 г.

a) Generally, whether in this field rights are conferred directly by Community law on individuals subject to national law and, in particular, whether such is the case in the matter dealt with by the Luxembourg Law of 22 July 1963 governing the establishment and operation of a river port on the Moselle, as amended by the Law of 26 June 1968 on the same subject; b) If the answer is in the affirmative, whether the provisions of the abovementioned Laws are, and to what extent, incompatible either with the letter and spirit of the Treaty of Rome, or with regulations or other obligations imposed by the competent bodies established by the said Treaties.