The Rise in Comovement Across National Stock Markets: Market Integration or it Bubble?

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The Dark Side of Global Integration: Increasing Tail Dependence (2010, unknown): “We rely on a recently developed codependence methodology by Cappiello et al. (2005) in order to determine how two assets comove in a certain part of the return distribution.”
International comovement of stock market returns: a wavelet analysis (2009, methodology): “The most commonly used mother wavelet is the Morlet wavelet and is defined as ψ(t) = π− 1 4 μ e0 − e− ω(2)0 2 ¶ e −t2 2 (5) Since the term e− ω(2)0 2 becomes negligible for an appropriate ω0, the Morlet wavelet is simply defined as ψ(t) = π− 1 4 e0e −t2 2 (6) with the corresponding Fourier transform”