Aston, A. H.; Conway, S. J. and Balme, M. R.
(2011).
Identifying Martian gully evolution.Geological Society, London, Special Publications, 356(1)
pp. 151–169.
Bargery, Alistair S.; Balme, Matthew R.; Warner, Nicholas; Gallagher, Colman J. and Gupta, Sanjeev
(2011).
A background to Mars exploration and research.Geological Society, London, Special Publications, 356(1)
pp. 5–20.