A Language for Planning with Statistics. - Nathaniel G. Martin; James F. Allen (UAI, 1991)

The TRAINS project: a case study in building a conversational planning agent. - James F. Allen; Lenhart K. Schubert; George Ferguson; Peter A. Heeman; Chung Hee Hwang; Tsuneaki Kato; Marc Light; Nathaniel G. Martin; Bradford W. Miller; Massimo Poesio; David R. Traum (J. Exp. Theor. Artif. Intell., 1995)

Improving Big Plans. - Neal Lesh; Nathaniel G. Martin; James F. Allen (AAAI/IAAI, 1998)