VVD, JOVD (1983) LEF, jrg. 1. [Journal volume]

VVD, JOVD (1992) LEF, jrg. 10. [Journal volume]

VVD, JOVD (1993) LEF, jrg. 11. [Journal volume]

VVD, JOVD (1994) LEF, jrg. 12. [Journal volume]

VVD, JOVD (1995) LEF, jrg. 13. [Journal volume]

VVD, JOVD (1996) LEF, jrg. 14. [Journal volume]

VVD, JOVD (1997) LEF, jrg. 15. [Journal volume]

VVD, JOVD (1998) LEF, jrg. 16. [Journal volume]

VVD, JOVD (1999) LEF, jrg. 17. [Journal volume]

VVD, JOVD (1984) LEF, jrg. 2. [Journal volume]

VVD, JOVD (1985) LEF, jrg. 3. [Journal volume]

VVD, JOVD (1986) LEF, jrg. 4. [Journal volume]

VVD, JOVD (1987) LEF, jrg. 5. [Journal volume]

VVD, JOVD (1988) LEF, jrg. 6. [Journal volume]

VVD, JOVD (1989) LEF, jrg. 7. [Journal volume]

VVD, JOVD (1990) LEF, jrg. 8. [Journal volume]

VVD, JOVD (1991) LEF, jrg. 9. [Journal volume]