Links S:

SETI League
    SETI League Policy Manual

Sheehan, William, The Planet Mars: A History of Observation and Discovery, The University of Arizona Press, Tucson, 1996
    Chapter 12

Space Telescope Science Institute (STSci)
    MARS: A Cooler, Clearer World

Students for the Exploration and Development of Space, SEDS
    The Nine Planets:
        Mars
        Miranda
        Phobos