@article {1516,
	title = {Spectroscopic studies of nitrogenated amorphous carbon films prepared by ion beam sputtering},
	journal = {J. Appl. Phys.},
	volume = {91},
	year = {2002},
	pages = {4944-4955},
	author = {D. Das* and K. H. Chen and S. Chattopadhyay and L. C. Chen}
}
