[1] E. S. Curtis and C. Waller, “A Search-Theoretic Model of Legal and Illegal Currency,” Journal of Monetary Economics, Vol. 45, 2000, pp. 155-184. doi:10.1016/S0304-3932(99)00042-2
[2] R. Dutu, “Strong and Weak Currencies in a Search- Theoretic Model of Money,” Research Paper, 2001.
[3] S. Lotz and G. Rocheteau, “On the Launching of a New Currency,” Journal of Money, Credit and Banking, Vol. 34, No. 3, 2002, pp. 563-588. doi:10.1353/mcb.2002.0003
[4] N. Kiyotaki and R. Wright, “A Search-Theoretic Ap- proach to Monetary Economics,” American Economic Review, Vol. 83, No. 1, 1993, pp. 63-77.
[5] B. Craig and C. Waller, “Dual Currency Economies as Multiple Payment Systems,” Economic Review, Federal Reserve Bank of Cleveland, Cleveland, 2000.