Alfredo Favenza Mario Cataldi Maria Luisa Sapino Alberto Messina Topic Development Based Refinement of Audio-Segmented Television News. 226-232 2008 NLDB http://dx.doi.org/10.1007/978-3-540-69858-6_23 conf/nldb/2008 db/conf/nldb/nldb2008.html#FavenzaCSM08