- Thomas F. Keefe, Carl E. Landwehr, editors, Database Security, VII: Status and Prospects, Proceedings of the IFIP WG11.3 Working Conference on Database Security, Lake Guntersville, Alabama, USA, 12-15 September, 1993. Volume A-47 of IFIP Transactions, North-Holland, 1994.
- Joachim Biskup, Matthew Morgenstern, Carl E. Landwehr, editors, Database Security, VIII: Status and Prospects, Proceedings of the IFIP WG11.3 Working Conference on Database Security, Bad Salzdetfurth, Germany, 23-26 August, 1994. Volume A-60 of IFIP Transactions, North-Holland, 1994.