Financial Cycle

http://www.norges-bank.no/pages/95810/Staff_memo_2013_13.pdf
The length of financial cycles are roughly 3-4 times longer than that of business cycles

IRBC x EZ

International Risk Cycles
http://www.bankofcanada.ca/wp-content/uploads/2010/11/Verdelhan_Adrien.pdf

[matlab/octave] crosscorr/xcorr

crosscorr: sample cross correlation (Econometrics Toolbox)
http://www.mathworks.com/help/econ/crosscorr.html

xcorr: cross correlation (Signal Processing Toolbox)
http://www.mathworks.com/help/signal/ref/xcorr.html