Higuchi's fractal dimension for analysis of the effect of external periodic stressor on electrical oscillations in the brain. - Hiie Hinrikus; Maie Bachmann; Deniss Karai; Wlodzimierz Klonowski; Jaanus Lass; Pavel Stepien; Robert Stepien; Viiu Tuulik (Medical Biol. Eng. Comput., 2011)

Accurate Dialysis Dose Evaluation and Extrapolation Algorithms During Online Optical Dialysis Monitoring. - Ivo Fridolin; Deniss Karai; Sergei Kostin; Raimund Ubar (IEEE Trans. Biomed. Eng., 2013)

Smart photoplethysmographic sensor for pulse wave registration at different vascular depths. - Mairo Leier; Kristjan Pilt; Deniss Karai; Gert Jervan (EMBC, 2015)