Study by XPS and XAS (XANES) of tungsten oxides based catalysts : WO2, WO3, 1 % Pd/WO2 and 1 % Pd/WO3 C. Bigey, V. Logie, A. Bensaddik, J. L. Schmitt et G. MaireJ. Phys. IV France, 08 PR5 (1998) PR5-553-PR5-560DOI: https://doi.org/10.1051/jp4:1998571