Commission Regulation (EC) No 1024/1999 of 18 May 1999 amending Regulation (EC) No 1595/98 amending Regulation (EC) No 2603/97 laying down the detailed implementing rules for imports of rice originating in the ACP countries or the overseas countries and territories (OCT) and laying down specific detailed rules on the partial reimbursement of import duties levied on rice originating in the ACP countries