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+# References
+
+[Bruns, 2004] Bruns, A. (2004). Fourier-, Hilbert-and Wavelet-based signal analysis: are they really different approaches? Journal of Neuroscience Methods, 137(2):321–332.
+
+[Grothe et al., 2012] Grothe, I., Neitzel, S. D., Mandon, S., and Kreiter, A. K. (2012). Switching neuronal inputs by differential modulations of gamma-band phase-coherence. Journal of Neuroscience,
+32(46):16172–16180.
+
+[Grothe et al., 2018] Grothe, I., Rotermund, D., Neitzel, S. D., Mandon, S., Ernst, U. A., Kreiter, A. K., and Pawelzik, K. R. (2018). Attention selectively gates afferent signal transmission to area v4. Journal of Neuroscience, 38(14):3441–3452.
+
+[Marzetti et al., 2019] Marzetti, L., Basti, A., Chella, F., D’Andrea, A., Syrj ̈al ̈a, J., and Pizzella, V. (2019). Brain functional connectivity through phase coupling of neuronal oscillations: a perspective from magnetoencephalography. Frontiers in Neuroscience, 13:964.
+
+[Munia and Aviyente, 2019] Munia, T. T. and Aviyente, S. (2019). Time-frequency based phase-amplitude coupling measure for neuronal oscillations. Scientific Reports, 9(1):1–15.
+
+[Torrence and Compo, 1998] Torrence, C. and Compo, G. P. (1998). A practical guide to wavelet analysis. Bulletin of the American Meteorological society, 79(1):61–78. 9