Dual-Currency Economies as Multiple-Payment Systems
用货币搜寻模型研究在缺乏稳定本币和先进支付系统的经济体中，第二种货币如何内生地被接受，对转型和发展中国家有政策启示。
Monetary search models are valuable for studying how a second currency's acceptability arises endogenously in an economy that lacks a stable domestic currency and other more sophisticated payment systems. Search models' basic assumptions (absence of credit, lack of smoothly functioning banking systems, reliance on currency as the sole medium of exchange, and primitive trading environments) are not necessarily consistent with modern financial systems. They do, however, provide good descriptions of transitional and developing economies, particularly in the countries of the former Soviet Union, and may yield helpful policy prescriptions.