@article {14186,
	title = {Theoretical Studies of Substitutionally Doped Single-Walled Nanotubes},
	journal = {J. Nanotechnol.},
	volume = {2010},
	year = {2010},
	pages = {Article ID 801789},
	doi = {10.1155/2010/801789 },
	author = {C. S. Yeung and Y. K. Chen and Y. A. Wang*}
}
