Commission Regulation (EC) No 1082/2001 of 1 June 2001 amending Regulation (EC) No 562/2000 laying down detailed rules for the application of Council Regulation (EC) No 1254/1999 as regards the buying-in of beef and correcting Regulation (EC) No 590/2001 derogating from and amending Regulation (EC) No 562/2000