El-Tech: A Performance Support System with Embedded Training for Electronics Technicians. - Alberto J. Cañas; John Coffey 001; Thomas Reichherzer; Greg Hill; Niranjan Suri; Roger Carff; Timothy S. Mitrovich; Derek Eberle (FLAIRS, 1998)

The design-methods comparison project. - A. Terry Bahill; Mack W. Alford; K. Bharathan; John R. Clymer; Douglas L. Dean; Jeremy Duke; Greg Hill; Edward V. LaBudde; Eric J. Taipale; A. Wayne Wymore (IEEE Trans. Syst. Man Cybern. Part C, 1998)

Knowledge modeling and the creation of El-Tech: a performance support and training system for electronic technicians. - John W. Coffey; Alberto J. Cañas; Greg Hill; Roger Carff; Thomas Reichherzer; Niranjan Suri (Expert Syst. Appl., 2003)

Concept Maps: Integrating Knowledge and Information Visualization. - Alberto J. Cañas; Roger Carff; Greg Hill; Marco M. Carvalho; Marco Arguedas; Thomas C. Eskridge; James Lott; Rodrigo Carvajal (Knowledge and Information Visualization, 2005)

Hierarchical two stage planner for little dog. - Brian V. Bonnlander; John R. Rebula; Peter D. Neuhaus; Matthew Johnson 001; Greg Hill; Carlos Pérez; John Carff; William Howell; Jerry E. Pratt (ICRA, 2008)

Learning terrain cost maps. - John R. Rebula; Greg Hill; Brian V. Bonnlander; Matthew Johnson 001; Peter D. Neuhaus; Carlos Pérez; John Carff; William Howell; Jerry E. Pratt (ICRA, 2008)