Berardina De Carolis Nicole Novielli Vito Leonardo Plantamura Enrica Gentile Generating comparative descriptions of places of interest in the tourism domain. 277-280 2009 RecSys http://doi.acm.org/10.1145/1639714.1639767 conf/recsys/2009 db/conf/recsys/recsys2009.html#CarolisNPG09