@article{TUW-103347, author = {Hlawatsch, Franz and Papandreou-Suppappola, A. and Boudreaux-Bartels, G.F.}, title = {The power classes-quadratic time-frequency representations with scale covariance and dispersive time-shift covariance}, journal = {IEEE Transactions on Signal Processing}, year = {1999}, volume = {vol. 47}, number = {no. 11}, pages = {3067--3083}, url = {http://publik.tuwien.ac.at/files/pub-et_3581.pdf} }