Paul W. Keaton

Manned Mars Missions. Working group papers, volume 1, section 1-4

Michael B. Duke, Paul W. Keaton, 1986 .

Manned Mars missions: A working group report

Michael B. Duke, Paul W. Keaton, 1986 .

Mission objectives and comparison of strategies for Mars exploration

Michael B. Duke, Barney B. Roberts, Geoffrey Briggs, 1993 .

Manned Mars Mission. Working group papers, volume 2, section 5 - appendix

Michael B. Duke, Paul W. Keaton, 1986 .

Manned Mars Mission. Working Group Papers: a workshop at Marshall Space Flight Center, Huntsville, Alabama

Michael B. Duke, Paul W. Keaton, 1986 .