QRS classification and spatial combination for robust heart rate detection in low-quality fetal ECG recordings. - Guy J. J. Warmerdam; Rik Vullings; Carola van Pul; Peter Andriessen; S. Guid Oei; Pieter F. F. Wijn (EMBC, 2013)

Reliability of spectral analysis of fetal heart rate variability. - Guy J. J. Warmerdam; Rik Vullings; Jan W. M. Bergmans; S. Guid Oei (EMBC, 2014)

Selective heart rate variability analysis to account for uterine activity during labor and improve classification of fetal distress. - Guy J. J. Warmerdam; Rik Vullings; Judith O. E. H. Van Laar; M. Beatrijs van der Hout-van der Jagt; Jan W. M. Bergmans; Lars Schmitt; S. Guid Oei (EMBC, 2016)

A Fixed-Lag Kalman Smoother to Filter Power Line Interference in Electrocardiogram Recordings. - Guy J. J. Warmerdam; Rik Vullings; Lars Schmitt; Judith O. E. H. Van Laar; Jan W. M. Bergmans (IEEE Trans. Biomed. Eng., 2017)

Hierarchical Probabilistic Framework for Fetal R-Peak Detection, Using ECG Waveform and Heart Rate Information. - Guy J. J. Warmerdam; Rik Vullings; Lars Schmitt; Judith O. E. H. Van Laar; Jan W. M. Bergmans (IEEE Trans. Signal Process., 2018)