@article{reisberg2006-16401736,
  author  = {Reisberg, B. and Doody, R. and Stöffler, A. and Schmitt, F. and Ferris, S. and Möbius, H. J.},
  title   = {{A 24-week open-label extension study of memantine in moderate to severe Alzheimer disease}},
  journal = {Archives of neurology},
  year    = {2006},
  doi     = {10.1001/archneur.63.1.49},
  pmid    = {16401736},
  url     = {https://doi.org/10.1001/archneur.63.1.49}
}