Towards automatic speech-to-text alignment. - Ake Andersson; Holger Broman (EUROSPEECH, 1993)

A second order recursive algorithm for subspace tracking. - Åke Andersson; Holger Broman (ICASSP, 1996)

Instrumental variables (IV) and prediction error (PE) like second order recursive algorithms. - Holger Broman; Ake Andersson (ICASSP, 1996)

A second-order recursive algorithm with applications to adaptive filtering and subspace tracking. - Ake Andersson; Holger Broman (IEEE Trans. Signal Process., 1998)