1. Brillinger, D.R. 1994. Some uses of cumulants in wavelet analysis. Journal of Nonparametric Statistics 6: 93–114.
2. Bruce, A., and H. Gao. 1996. Applied wavelet analysis with S-plus. New York: Springer.
3. Chui, C.K. 1992. An introduction to wavelets. New York: Academic Press.
4. Crowley, P. 2005. An intuitive guide to wavelets for economists. Discussion Paper No. 1/2005, Research Department, Bank of Finland.
5. Dalkir, M. 2004. A new approach to causality in the frequency domain. Economics Bulletin 3(44): 1–14.