@incollection{Stephani11, author = {Caspar Stephani}, title = {Cognitive and Psychiatric Aspects of Parkinson’s Disease}, booktitle = {Symptoms of Parkinson's Disease}, publisher = {IntechOpen}, address = {Rijeka}, year = {2011}, editor = {Abdul Qayyum Rana}, chapter = {7}, doi = {10.5772/21171}, url = {https://doi.org/10.5772/21171} }