Simple two-electrode biosignal amplifier. - Dobromir Petkov Dobrev; Tatyana Neycheva; Nikolay Mudrov (Medical Biol. Eng. Comput., 2005)

Bootstrapped two-electrode biosignal amplifier. - Dobromir Petkov Dobrev; Tatyana Neycheva; Nikolay Mudrov (Medical Biol. Eng. Comput., 2008)

High Resolution 16-channel ECG Test Simulator for Online Digital-to-Analogue Conversion of Data from PC. - Tatyana Neycheva; Todor Stoyanov; Roger Abächerli; Ivaylo Christov (CinC, 2013)

Multi-parametric Analysis for Atrial Fibrillation Classification in the ECG. - Ivaylo Christov; Vessela Tz. Krasteva; Iana Simova; Tatyana Neycheva; Ramun Schmid (CinC, 2017)

Fine Tuning of the Dynamic Low-pass Filter for Electromyographic Noise Suppression in Electrocardiograms. - Ivaylo Christov; Tatiana Neycheva; Ramun Schmid (CinC, 2017)

Pseudo-real-time low-pass filter in ECG, self-adjustable to the frequency spectra of the waves. - Ivaylo Christov; Tatyana Neycheva; Ramun Schmid; Todor Stoyanov; Roger Abächerli (Medical Biol. Eng. Comput., 2017)

High-quality biopotential acquisition without a reference electrode: power-line interference reduction by adaptive impedance balancing in a mixed analog-digital design. - Dobromir Petkov Dobrev; Tatyana Neycheva (Medical Biol. Eng. Comput., 2022)