Commission Regulation (EEC) No 1924/92 of 13 July 1992 amending Regulation (EEC) No 2349/91 laying down detailed rules for the application of Regulation (EEC) No 1637/91 fixing compensation with regard to the reduction of the reference quantities referred to in Article 5c of Regulation (EEC) No 804/68 and compensation for the definitive discontinuation of milk production