“OPTIMI (Online Predicative Tools for Intervention in Mental Illness) OPTIMI ECG sensor as a measurement tool for signs of stress and poor coping in high risk individuals”, Psihìatr. nevrol. med. psihol., vol. 1, no. 2, pp. 28–33, Mar. 2015, Accessed: Oct. 25, 2026. Available: https://periodicals.karazin.ua/pnmp/article/view/1503