Niewa, R., Rau, D., Wosylus, A., Meier, K., Wessel, M., Hanfland, M., et al. (2009). High-pressure high-temperature phase transition of γ'-Fe4N. Journal of Alloys and Compounds, 480, 76-80. doi:10.1016/j.jallcom.2008.09.178.