4th Refinement Workshop Proceedings of the 4th Refinement Workshop, organised by BCS-FACS, 9–11 January 1991, Cambridge Morris Joseph M. Heftet / 1991 / Engelsk
5th Refinement Workshop Proceedings of the 5th Refinement Workshop, organised by BCS-FACS, London, 8–10 January 1992 Jones Cliff B. Heftet / 1992 / Engelsk
