Commission Regulation (EEC) No 538/93 of 9 March 1993 amending Regulation (EEC) No 3886/92 laying down detailed rules for the application of the premium schemes provided for in Council Regulation (EEC) No 805/68 on the common organization of the market in beef and veal and repealing Regulations (EEC) No 1244/82 and (EEC) No 714/89