VPQ: a spoken language interface to large scale directory information. - Bruce Buntschuh; Candace A. Kamm; Giuseppe Di Fabbrizio; Alicia Abella; Mehryar Mohri; Shrikanth S. Narayanan; Ilija Zeljkovic; R. Doug Sharp; Jeremy H. Wright; S. Marcus; J. Shaffer; R. Duncan; et al. (ICSLP, 1998)