David Greathead Lynne M. Coventry Budi Arief Aad P. A. van Moorsel Deriving requirements for an online community interaction scheme: indications from older adults. 1541-1546 2012 CHI Extended Abstracts https://doi.org/10.1145/2212776.2223669 conf/chi/2012a db/conf/chi/chi2012a.html#GreatheadCAM12