@inproceedings{RisserBell2011,
  author    = {Ralf Risser and Daniel Bell},
  title     = {Mobility Behaviour and Mobility Needs of older People. Ageing Clinical and Experimental Reserach, Official Journal of the Italian Society of Gerontology and Geriatrics},
  booktitle = {VII European Congress – Healthy and Active Ageing for all Europeans – II},
  pages     = {147},
  year      = {2011},
}