The folksonomy tag cloud: when is it useful?. Journal of Information Science, (34)1:15-29, 2008. [PUMA: analysis cloud folksonomy tag toread] URL
The folksonomy tag cloud: When is it useful?. Journal of Information Science, 016555150607808, CILIP, 2007. [PUMA: cloud folksonomy kdubiq ranking search summerschool tag tagging taggingsurvey]