Deborah A. Dahl Madeleine Bates Michael Brown William Fisher Kate Hunicke-Smith David Pallett Christine Pao Alexander I. Rudnicky Elizabeth Shriberg Expanding the Scope of the ATIS Task: The ATIS-3 Corpus. 1994 conf/naacl/1994 HLT http://acl.ldc.upenn.edu/H/H94/H94-1010.pdf db/conf/naacl/naacl1994.html#DahlBBFHPPRS94