Pavel Ircing Pavel Pecina Douglas W. Oard Jianqiang Wang Ryen W. White Jan Hoidekr Information Retrieval Test Collection for Searching Spontaneous Czech Speech. 439-446 2007 conf/tsd/2007 TSD http://dx.doi.org/10.1007/978-3-540-74628-7_57 db/conf/tsd/tsd2007.html#IrcingPOWWH07