1.		Third economist telecommunications conference : competition & change in europe's telecommunications markets / org. The Economist Conference Unit Data Publicação: 1991 Tema: Vária
2.		4th Economist telecommunications conference : Developing cross-border european telecommunications / org. The Economist Conference Data Publicação: 1992 Tema: Vária
3.		The 6th Economist telecommunications conference : strategies for the 21st century - meeting the challenges of a changing industry / org. The Economist Conference Data Publicação: 1994 Tema: Vária