Bischof, M., Obermann, C., Hartmann, M. N., Hager, O. M., Kirschner, M., Kluge, A., . . . Kaiser, S. (2016). The brief negative symptom scale: Validation of the German translation and convergent validity with self-rated anhedonia and observer-rated apathy. BMC Psychiatry.

Bischof, Martin, Caitriona Obermann, Matthias N. Hartmann, Oliver M. Hager, Matthias Kirschner, Agne Kluge, Gregory P. Strauss, και Stefan Kaiser. "The Brief Negative Symptom Scale: Validation of the German Translation and Convergent Validity With Self-rated Anhedonia and Observer-rated Apathy." BMC Psychiatry 2016.

Bischof, Martin, et al. "The Brief Negative Symptom Scale: Validation of the German Translation and Convergent Validity With Self-rated Anhedonia and Observer-rated Apathy." BMC Psychiatry 2016.