++++ Social security for migrant workers - Family benefits - Worker subject to the legislation of one Member State - Family members residing in another Member State - Transitional arrangements introduced by Article 60 of the Act of Accession of Spain pending the entry into force of the uniform solution for all the Member States referred to in Article 99 of Regulation No 1408/71 - Application by analogy of Article 73(2 ) of Regulation No 1408/71 - Article 73(2 ) declared by the Court to be invalid - Effects - Generalization of the arrangements established by Article 73(1 ) bringing about the entry into force of the uniform solution - Date of application of Article 73(1 ) to Spanish workers ( EEC Treaty, Art . 51; Act of Accession of 1985, Art . 60; Council Regulation No 1408/71, Arts 73(1 ) and ( 2 ) and 99 )