6Maria C, Gian P, Valentina F? et al. Characterisation byXPS of the corrosion patina formed on bronze surfaces[J].Journal of Cultural Heritage,2002,3(3) : 199-204.
7Chawla S K, Sankarraman N,Payer J H. Diagnostic spectrafor XPS analysis of Cu-0*S-H compounds[J]. Electron Spec-trosc,1992,61(1):1-18.
8Feliu S,Mariaca L, Simancas J. X-Ray photoelectronspectroscopy study of the effect of nitrogen dioxide and sulfurdioxide on the atmospheric corrosion of copper at low relativehumidity values[J]. Corrosion,2005 ?61(7) : 627-638.