1. The Periglaciation of Great Britain;Ballantyne,1994
2. The development of sorted stone circles in recently deglaciated terrain, Jotunheimen, Norway;Ballantyne;Arctic Alpine Res.,1982
3. Morphological evidence for a sea-ice origin for Elysium Planitia platy terrain;Balme;Lunar Planet. Sci.,2007
4. Balme, M.R., Murray, J.B., Muller, J.-P., Kim, J.-R., 2007b. Geomorphological mapping of the Elysium Planitia region using HRSC images. In: European Mars Science and Exploration Conference: Mars Express & ExoMars, ESTEC, Noordwijk, The Netherlands
5. Periglacial features indicative of permafrost: Ice and soil wedges;Black;Quat. Res.,1976