Loerting, T., Schustereder, W., Winkel, K., Salzmann, C., Kohl, I., & Mayer, E. (2006). Amorphous Ice: Stepwise Formation of Very-High-Density Amorphous Ice from Low-Density Amorphous Ice at 125K. Physical Review Letters, 96: 025702. Retrieved from http://link.aps.org/abstract/PRL/v96/e025702.