Signatures of Depression in Non-Stationary Biometric Time Series. - Milka Culic; Biljana Gjoneska; Hiie Hinrikus; Magnus Jändel; Wlodzimierz Klonowski; Hans Liljenström; Nada Pop-Jordanova; Dan Mihai Psatta; Dietrich von Rosen; Björn Wahlund (Comput. Intell. Neurosci., 2009)