Shakesby, R. A., Matthews, J. A., Berrisford, M. S., & McEwen, L. J. (1999). Snow-push processes in pronival (protalus) rampart formation: Geomorphological evidence from Smorbotn, Romsdalsalpane, southern Norway. Geografiska Annaler: Series A, Physical Geography, 81(1), 31-45. https://doi.org/10.1111/j.0435-3676.1999.00047.x