@article{petrelli2015-25534579,
  author  = {Petrelli, A. and Kaesberg, S. and Barbe, M. T. and Timmermann, L. and Rosen, J. B. and Fink, G. R. and Kessler, J. and Kalbe, E.},
  title   = {{Cognitive training in Parkinson's disease reduces cognitive decline in the long term}},
  journal = {European journal of neurology},
  year    = {2015},
  doi     = {10.1111/ene.12621},
  pmid    = {25534579},
  url     = {https://doi.org/10.1111/ene.12621}
}