T. A. C. M. Classen and W. F. G. Mecklenbrauker, 1980. "The Wigner distribution-a tool for time-frequency signal analysis; Part I," Philips J.
T. A. C. M. Classen and W. F. G. Mecklenbrauker published a paper in the journal Philips J. about the Wigner distribution, which is a tool for analyzing time-frequency signals.