1. Payment systems in the Group of Ten countries;Bank for International Settlements,1993
2. Home hanking in the EC;Bureau Européen des Unions des Consommateurs,1992
3. Household money holdings and the demand deposit rate;Barro;Journal of Money, Credit and Banking,1972
4. Price competition and multiproduct firms;Champsaur,1990
5. Electronic payment systems: Winning new customers;Essinger,1992