Optical properties of complex oxides: Vanadate ladders and related inorganic nanotubes J.L. Musfeldt, A.B. Sushkov, J. Jegoudez, A. Revcolevschi, P. Millet et J. Galy J. Phys. IV France, 12 9 (2002) 355 DOI: 10.1051/jp4:20020436