Commission Regulation (EC) No 1094/97 of 16 June 1997 amending Regulation (EC) No 795/97 derogating from Regulation (EC) No 1223/94 laying down special detailed rules for the application of the system of advance- fixing certificates for certain agricultural products exported in the form of goods not covered by Annex II to the Treaty, and derogating from Regulation (EEC) No 3665/87 laying down common detailed rules for the application of the system of export refunds on agricultural products