Steve Whittaker Julia Hirschberg John Choi Donald Hindle Fernando C. N. Pereira Amit Singhal SCAN: Designing and Evaluating User Interfaces to Support Retrieval From Speech Archives. 26-33 SIGIR1999/P026.pdf 1999 conf/sigir/99 SIGIR http://doi.acm.org/10.1145/312624.312639 db/conf/sigir/sigir99.html#WhittakerHCHPS99