W. Zimmerman ... [and others] ; prepared for U.S. Army Research Institute for the Behavioral and Social Sciences through an agreement with National Aeronautics and Space Administration by Jet Propulsion Laboratory, California Institute of Technology
L.A. Braby ... [and others] ; prepared for National Aeronautics and Space Administration Lyndon B. Johnson Space Center, order no. T-794H under a related services agreement with the U.S. Department of Energy contract DE-AC06-76RLO 1830