Harnessing Folksonomies to Produce a Social Classification of Resources. IEEE Transactions on Knowledge and Data Engineering, (99)PrePrintsIEEE Computer Society, Los Alamitos, CA, USA, 2012. [PUMA: classification delicious folksonomy tagging toread dataset]
A del.icio.us study. 27.12.2004. [PUMA: 2006 article delicious folksonomy tagging taggingsurvey toread] URL