Halberg F, Cornelissen G, Bingham C, Witte H, Ribary U, Hesse W, Petsche H, Engebretson M, Geissler H, Weiss S, Klimesch W, Rappelsberger P, Katinas G, Schwartzkopff O.				          Chronomics: imaging in time by phase synchronization reveals wide spectral-biospheric resonances beyond short rhythms. 
				          Neuro Endocrinol Lett. 2003 Oct; 
				          24(5): 355-380