Endrass, Jérôme; Vetter, Stefan; Gamma, Alex; Gallo, William T; Rossegger, Astrid; Urbaniok, Frank; Angst, Jules (2007). Are behavioral problems in childhood and adolescence associated with bipolar disorder in early adulthood? European Archives of Psychiatry and Clinical Neuroscience, 257(4):217-221.
Endrass, Jérôme; Angst, Jules; Gamma, Alex; Gallo, William T; Ajdacic-Gross, Vladeta; Eich, Dominique; Rössler, Wulf (2003). Premorbid personality in bipolar II disorders, with reference to family genetics. Results of a prospective epidemiological study. Neurology, Psychiatry and Brain Research, 10(3):121-124.