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  Bakr, M.; Souliou, S.; Blanco-Canosa, S.; Zegkinoglou, I.; Gretarsson, H.; Strempfer, J.; Loew, T.; Lin, C.; Liang, R.; Bonn, D.; Hardy, W.; Keimer, B.; Le Tacon, M.: Lattice dynamical signature of charge density wave formation in underdoped YBa₂Cu₃O_6+x. Physical Review B 88 (2013), p. 214517/1-11

10.1103/PhysRevB.88.214517
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