1. Topic detection and tracking pilot study: final report;Allan,1998
2. Bird, S., Liberman, M., 1999. A formal framework for linguistic annotation, Technical Report MS-CIS-99-01, Department of Computer and Information Science, University of Pennsylvania (expanded from version presented at ICSLP-98, Sydney), in http://morph.ldc.upenn.edu/Papers/
3. Byrne, B. et al., 1999. Towards language independent acoustic modeling, http://www.clsp.jhu.edu/ws99/projects/asr/index.html
4. The TDT-2 text and speech corpus;Cieri,1999
5. Doddington, G., 1996. The 1996 Hub-4 annotation specification for evaluation of speech recognition on broadcast news, ftp://jaguar.ncsl.nist.gov/csr96/h4/h4annot.ps