@article {1212,
	title = {Raman Spectroscopic Studies of Sulfation of Cerium Oxide},
	journal = {Appl. Catalysis B : Environmental},
	volume = {12},
	year = {1997},
	pages = {309-324},
	author = {Wu, J. T. and C.J. Chuang and K.I. Chang and C.H. Yang and K. H. Chen}
}
