SemanticOrganizer: A Customizable Semantic Repository for Distributed NASA Project Teams. - Richard M. Keller; Daniel C. Berrios; Robert E. Carvalho; David R. Hall; Stephen J. Rich; Ian B. Sturken; Keith J. Swanson; Shawn R. Wolfe (ISWC, 2004)

Semantic Integration of Heterogeneous NASA Mission Data Sources. - Richard M. Keller; Daniel C. Berrios; Shawn R. Wolfe; David R. Hall; Ian B. Sturken (AAAI Fall Symposium: Semantic Web for Collaborative Knowledge Acquisition, 2006)