@article{TUW-249637, author = {Claasen, Theo A. C. M. and Mecklenbr{\"a}uker, Wolfgang F. G.}, title = {The Wigner Distribution - A Tool for Time-Frequency Signal Analysis, Part I: Continuous-Time Signals}, journal = {Philips Journal of Research}, year = {1980}, volume = {35}, pages = {217--250}, url = {http://publik.tuwien.ac.at/files/PubDat_249637.pdf} }