Citation: Redhammer, G.J.; Roth, G.; Tippelt, G.; Lottermoser, W.; Bernroider, M.; Amthauer, G. (2004). The mixed-valence iron compound Na0.1 Fe7 (P O4)6: crystal structure and (57)Fe Mossbauer spectroscopy between 80 and 295 K. Journal of Solid State Chemistry, 177, pp. 1607-1618.