Systematics of c-axis phonons in the thallium- and bismuth-based cuprate superconductors
. Phys. Rev. B Condens. Matter Mater. Phys. 60, 13196 (1999).
Charged magnons and magneto-elastic polarons in the mid-infrared spectrum of YBa2Cu3O6
. Physica C: Superconduct. Appl. 317-318, 286 (1999).
The symmetry problem in α′-NaV2O5
. Physica B: Condensed Matter 259-261, 978 (1999).