Giuseppe Boccignone Angelo Chianese Vincenzo Moscato Antonio Picariello Context-sensitive queries for image retrieval in digital libraries. 53-84 2008 31 J. Intell. Inf. Syst. 1 http://dx.doi.org/10.1007/s10844-007-0040-5 db/journals/jiis/jiis31.html#BoccignoneCMP08