Citation: Doverbratt, Isa; Ponou, Sim\'eon; Zhang, Yuemei; Lidin, Sven; Miller, Gordon J. (2015). Linear Metal Chains in Ca2M2X (M = Pd, Pt; X = Al, Ge): Origin of the Pairwise Distortion and Its Role in the Structure Stability. Chemistry of Materials, 27, pp. 304-.