Rasmusen, E. (1988). Mutual banks and stock banks. The Journal of Law and Economics, 31(2), 395-421.
Kiyotaki, N., & Wright, R. (1989). On money as a medium of exchange. Journal of political Economy, 97(4), 927-954.
Stodder, J. (2000, August). Reciprocal exchange networks: Implications for macroeconomic stability. In Proceedings of the 2000 IEEE Engineering Management Society. EMS-2000 (Cat. No. 00CH37139) (pp. 540-545). IEEE.
Lietaer, B. (2004). Complementary currencies in Japan today: History, originality and relevance. International Journal of Community Currency Research, 8(1), 1-23.
Lascelles, C. (2006). Complementary currencies: Mutual credit currency systems and the challenge of globalization. Duke University Unpublished, 1-12.
Colacelli, M., & Blackburn, D. J. (2009). Secondary currency: An empirical analysis. Journal of monetary economics, 56(3), 295-308.
Ozanne, L. K. (2010). Learning to exchange time: Benefits and obstacles to time banking.
Lasker, J., Collom, E., Bealer, T., Niclaus, E., Young Keefe, J., Kratzer, Z., ... & Perlow, K. (2011). Time banking and health: the role of a community currency organization in enhancing well-being. Health promotion practice, 12(1), 102-115.
Kristjanson, P., Mango, N., Krishna, A., Radeny, M., & Johnson, N. (2010). Understanding poverty dynamics in Kenya. Journal of international development, 22(7), 978-996.
Ruddick, W. (2011). Eco-Pesa: an evaluation of a complementary currency programme in Kenya’s informal settlements. International Journal of Community Currency Research, 15(A), 1-12.