Council Regulation (EEC) No 2001/83 of 2 June 1983 amending and updating Regulation (EEC) No 1408/71 on the application of social security schemes to employed persons, to self-employed persons and to members of their families moving within the Community and also amending and updating Regulation (EEC) No 574/72 laying down the procedure for implementing Regulation (EEC) No 1408/71