References
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  3. R.C. Hoagland, 'The Monuments of Mars - A City on the Edge of Forever', North Atlantic Books, Berkeley, 1987, 1992.

  4. R.R. Pozos, 'The Face on Mars: Evidence for a Lost Civilization?', Chicago Review Press, Chicago, 1986.

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  6. T.J. Parker, D.S. Gorsline, R.S. Saunders, D.C. Pieri, and D.M. Schneeberger, 'Coastal Geomorphology of the Martian Northern Plains', J. Geophys. Res., 82, No. E6, 11,061-11,078 (1993).

  7. National Aeronautics and Space Administration, 'Mars as Viewed by Mariner 9' (NASA SP-329), Scientific and Technical Information Office, Washington, D.C. (1976).

  8. C.S. Breed, M.J. Grolier and J.F. McCauley, 'Morphology and distribution of common 'sand' dunes on Mars: comparison with the Earth', J. Geophys. Res., 84, 8183-8204 (1979).

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  13. American Society of Photogrammetry, 'Manual of Photo Interpretation', p.109-111 (1960).