Council regulation (EEC) no. 4253/88 of 19 December 1988, laying down provisions for implementing regulation (EEC) no. 2052/88 as regards coordination of the activities of the different Structural Funds between themselves and with the operations of the European Investment Bank and the other existing financial instruments : provisional, unrevised texts : 9 languages - European Commission. (Υπηρεσία Επισήμων Εκδόσεων των Ευρωπαικών Κοινοτήτων, 1996)