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Sandberg, J. and Hansson, M. (2006) Cohernece Estimation between EEG Signals Using Multiple Window Time-Frequency Analysis Compared to Gaussian Kernels. Proceedings of the 14th European Signal Processing Conference, Florence, 4-8 September 2006.
http://www.eurasip.org/Proceedings/Eusipco/Eusipco2006/papers/1568981924.pdf

has been cited by the following article:

• TITLE: Coherence Modified for Sensitivity to Relative Phase of Real Band-Limited Time Series

  AUTHORS: William Menke

  KEYWORDS: Time Series, Coherence, Cross Correlation, Band-Limited, Monochromatic, Filter

  JOURNAL NAME: Applied Mathematics, Vol.5 No.17, October 23, 2014

  ABSTRACT: As is well known, coherence does not distinguish the relative phase of a pair of real, sinusoidal time series; the coherence between them is always unity. This behavior can limit the applicability of coherence analysis in the special case where the time series are band-limited (nearly-monoch- romatic) and where sensitivity to phase differences is advantageous. We propose a simple mod-ification to the usual formula for coherence in which the cross-spectrum is replaced by its real part. The resulting quantity behaves similarly to coherence, except that it is sensitive to relative phase when the signals being compared are strongly band-limited. Furthermore, it has a useful interpretation in terms of the zero-lag cross-correlation of real band-passed versions of the time series.