@article{Claasen1980, author = {Claasen, T. A. C. M. and Mecklenbräuker, W.}, year = {1980}, pages = {217-250; 276-300; 372-389}, title = {The Wigner Distribution – a Tool for Time-Frequency Signal Analysis. Part I: Continuous-Time Signals. Part II: Discrete-Time Signals. Part III: Relations with Other Time-Frequency Transformations}, volume = {35} }