Mario Cataldi Claudio Schifanella K. Selçuk Candan Maria Luisa Sapino Luigi Di Caro CoSeNa: a context-based search and navigation system. 218-225 2009 MEDES http://doi.acm.org/10.1145/1643823.1643864 conf/medes/2009 db/conf/medes/medes2009.html#CataldiSCSC09