Predicting Early Warning Signals of Financial Distress: Theory and Empirical Evidence
S. Sievers, J. Klobucnik, D. Miersch, Predicting Early Warning Signals of Financial Distress: Theory and Empirical Evidence, 2017.

Predicting Early Warning Signals of Financial Distress: Theory and Empirical Evidence
J. Klobucnik, D. Miersch, S. Sievers, SSRN Electronic Journal (2017).

Model-Based Feature Enhancement for Reverberant Speech Recognition
A. Krueger, R. Haeb-Umbach, IEEE Transactions on Audio, Speech, and Language Processing 18 (2010) 1692–1707.

Acoustic filter-and-sum beamforming by adaptive principal component analysis
E. Warsitz, R. Haeb-Umbach, in: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2005), 2005, p. iv/797-iv/800 Vol. 4.