Citation: Boucher, Florent; Gaubicher, Jo\"el; Cuisinier, Marine; Guyomard, Dominique; Moreau, Philippe (2014). Elucidation of the Na2/3FePO4 and Li2/3FePO4 Intermediate Superstructure Revealing a Pseudouniform Ordering in 2D.. Journal of the American Chemical Society, 136, pp. 9144-9157.