José Ignacio Orlicki J. Ignacio Alvarez-Hamelin Pablo Ignacio Fierens Scalable Faceted Ranking in Tagging Systems. 283-296 2009 WEBIST (Selected Papers) http://dx.doi.org/10.1007/978-3-642-12436-5_21 conf/webist/2009sp db/conf/webist/webist2009sp.html#OrlickiAF09