A Study of Prosthetic Heart Valve Sounds. - Hayrettin Koymen; Bulent K. Altay; Yusuf Ziya Ider (IEEE Trans. Biomed. Eng., 1987)

A new technique for line interference monitoring and reduction in biopotential amplifiers. - Yusuf Ziya Ider; Hayrettin Koymen (IEEE Trans. Biomed. Eng., 1990)

Multichannel ECG data compression by multirate signal processing and transform domain coding techniques. - A. Enis Çetin; Hayrettin Koymen; M. Cengiz Aydin (IEEE Trans. Biomed. Eng., 1993)

Distribution of aortic mechanical prosthetic valve closure sound model parameters on the surface of the chest. - Ahmet Baykal; Yusuf Ziya Ider; Hayrettin Koymen (IEEE Trans. Biomed. Eng., 1995)

SVD-based on-line exercise ECG signal orthogonalization. - Burak Acar; Hayrettin Koymen (IEEE Trans. Biomed. Eng., 1999)

Capacity Analysis of a PMR System with DAB Downlink. - Ersin Sengul; Basak Can; Nail Akar; Yusuf Ziya Ider; Hayrettin Koymen (ISCC, 2003)

A spectrally efficient PMR system utilizing broadcast service. - Ersin Sengul; Hayrettin Koymen; Yusuf Ziya Ider (IEEE Trans. Broadcast., 2005)