PRECISE on ATIS: Semantic Tractability and Experimental Results. - Ana-Maria Popescu; Alex Armanasu; Oren Etzioni; David Ko; Alexander Yates (AAAI, 2004)

Modern Natural Language Interfaces to Databases: Composing Statistical Parsing with Semantic Tractability. - Ana-Maria Popescu; Alex Armanasu; Oren Etzioni; David Ko; Alexander Yates (COLING, 2004)