1. The KOF Economic Barometer, Version 2014: a Composite Leading Indicator for the Swiss Business Cycle;Abberger,2014
2. Eigenvalue ratio test for the number of factors;Ahn;Econometrica,2013
3. Altissimo, F., Bassanetti, A., Cristadoro, R., Forni, M., Hallin, M., Lippi, M., Reichlin, L. and Veronese, G., 2001. A real time coincident indicator for the euro area business cycle, CEPR Discussion Paper No. 3108.
4. New Eurocoin: tracking economic growth in real time;Altissimo;Rev. Econ. Stat.,2010
5. Real-time measurement of business conditions;Aruoba;J. Bus. Econ. Stat.,2009