STRUCTURAL MODELS OF FESE<SUB>X</SUB> Article Kurmaev E.Z., Skorikov N.A., Finkelstein L.D., Korotin M.A., Izyumov Y.A., McLeod J.A., Moewes A., Xie Y.L., Wu G., Chen X.H. Journal of Physics Condensed Matter. Vol. 21. 2009. 435702 p.