ripe-090: RIPE NCC Quarterly Report, Issue 5 (July 1993)
ripe-087: RIPE NCC Quarterly Report (May 1993)
ripe-079: RIPE NCC Quarterly Report, Issue 3, December 1992
ripe-073: RIPE NCC Quarterly Report, Issue 2 (October 1992)
ripe-062: RIPE NCC Quarterly Report Issue 1 (June 1992)