Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MATEEV B.,"ETH TREC-6 : Routing, Chinese, Cross-Language and Spoken Document Retrieval, TREC6",http://trec.nist.gov/pubs/trec6/t6_proceedings.html,,,1997,,,,https://cir.nii.ac.jp/crid/1574231875258567296,