REXS contribution to electronic ordering investigation in solids by Beale, T, Beutier, G, Bland, SR, Bombardi, A, Bouchenoire, L, Bunau, O, Di Matteo, S, Fernandez-Rodriguez, J, Hamann-Borrero, J, Herrero-Martin, J, Jacques, V, Johnson, R, Juhin, A, Matsumura, T, Mazzoli, C, Mulders, A, Nakao, H, Okamoto, J, Partzsch, S, Princep, A, Scagnoli, V, Strempfer, J, Vecchini, C, Wakabayashi, Y, Walker, H