1. Fast orthogonal PAST algorithm;Abed Meraim;IEEE Signal Process. letters,2000
2. Orthogonal Oja algorithm;Abed Meraim;IEEE Signal Process. letters,2000
3. Fast algorithms for subspace tracking;Attallah;IEEE Signal Process. letters,2001
4. Low cost adaptive algorithm for noise subspace estimation;Attallah;Electron. letters,2002