@article {10817,
	title = {Nucleation and reshaping thermodynamics of Ni as catalyst of carbon nanotubes},
	journal = {Physical Review B - Condensed Matter and Materials Physics},
	year = {2005},
	doi = {10.1103/PhysRevB.72.035453},
	author = {L.H. Liang and F. Liu and D.X. Shi and W.M. Liu and X.C. Xie and H.J. Gao}
}
