The Market for Electronic Cash Cards
构建理论模型分析电子现金卡的定价及其与信用卡、法定货币竞争的市场，并探讨电子现金卡是否被过度或不足使用。
We develop a theoretical framework aimed to model the pricing of electronic cash cards and the market domain in which these cards will be used in an environment where charge cards and currency (the legal tender) are competing payment media. We also investigate whether the adoption of the various payment media generates an underutilization or overutilization of the electronic cash cards relative to currency.