SOCIAL SECURITY FOR MIGRANT WORKERS - BENEFITS - NATIONAL RULES AGAINST OVERLAPPING BENEFITS - NOT APPLICABLE AGAINST RECIPIENTS OF BENEFITS OF THE SAME KIND PAID IN ACCORDANCE WITH THE PROVISIONS OF REGULATION NO 1408/71 - REDUCTION OF THE ADDITIONAL YEARS OF NOTIONAL EMPLOYMENT BY THE NUMBER OF YEARS IN RESPECT OF WHICH A WORKER MAY CLAIM A PENSION IN ANOTHER MEMBER STATE - NOT PERMISSIBLE ( REGULATION ( EEC ) NO 1408/71 OF THE COUNCIL , ART . 12 ( 2 ) AND ART . 46 ( 1 ))