Azevedo, J., Koopman, S. and Rua, A. (2006). Tracking the business cycle of the Euro area: A multivariate model-based band-pass filter Journal of Business and Economic Statistics, 24(3):278--290.
Portrait, F., Lindeboom, M. and van den Berg, G.J. (2006). Economic conditions early in life and individual mortality American Economic Review, 96:290--302.
