Sauber, J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Molnia, B. F. (Geological Survey Reston, VA, United States)
Lutchke, S. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rowlands, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Harding, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Carabajal, C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hurtado, J. M. (Texas Univ. El Paso, TX, United States)
Spade, G. (Urbino Univ. Urbino, Italy)