1. European Parliament Directive, 2001/77/EP.
2. Greek parliament law, 1650/1986. (OFFICIAL JOURNAL OF THE HELLENIC REPUBLIC)
3. Greek parliament law, 998/1979. (OFFICIAL JOURNAL OF THE HELLENIC REPUBLIC 289 A′)
4. Greek parliament law, 1734/1987. (OFFICIAL JOURNAL OF THE HELLENIC REPUBLIC 189 A′)
5. Greek parliament law, 2244/94. (OFFICIAL JOURNAL OF THE HELLENIC REPUBLIC)