@article{TUW-103411, author = {Hlawatsch, Franz and Matz, Gerald and Kirchauer, H. and Kozek, Werner}, title = {Time-Frequency formulation, design, and implementation of time-varying optimal filters for signal estimation}, journal = {IEEE Transactions on Signal Processing}, year = {2000}, volume = {vol. 48}, number = {no. 5}, pages = {1417--1432}, url = {http://publik.tuwien.ac.at/files/pub-et_3645.pdf} }