@conference {uvigo:rwls, title = {On the stability of the inverse time-varying prediction error filter obtained with the RWLS algorithm}, booktitle = {IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, volume = {3}, year = {1999}, pages = {1673{\textendash}1676}, address = {Phoenix, AZ, USA}, keywords = {nonstationary processes, prediction error filters, stability}, author = {R. L{\'o}pez-Valcarce and Soura Dasgupta} }