@article{TUW-109032, author = {Rupp, Markus and Cezanne, J.}, title = {Robustness Conditions of the LMS Algorithm with Time-Variant Matrix Step-Size}, journal = {Signal Processing}, year = {2000}, volume = {Vol. 80}, number = {no. 9}, pages = {1787--1794}, url = {http://publik.tuwien.ac.at/files/pub-et_9878.pdf} }