86/662/EEC, Council directive of 22 December 1986 on the limitation of noise emitted by hydraulic excavators, rope-operated excavators, dozers, loaders and excavator-loaders : provisional, unrevised texts : 9 languages - European Commission. (Υπηρεσία Επισήμων Εκδόσεων των ΕυρωπαΪκών κοινοτήτων, 1995)