Citation: Allison, M. C.; Avdeev, M.; Schmid, S.; Liu, S.; S\"ohnel, T; Ling, C. D. (2016). Synthesis, structure and geometrically frustrated magnetism of the layered oxide-stannide compounds Fe(Fe3-xMnx)Si2Sn7O16.. Dalton transactions (Cambridge, England : 2003), 45, pp. 9689-9694.