@article {1314,
	title = {Breakdown in planar magnetron discharges of argon on copper},
	journal = {Vacuum},
	volume = {81},
	year = {2007},
	pages = {1511-1514},
	author = {Y. Nunes and A. Wemans and P. R. Gordo and M. R. Teixeira and M. J. P. Maneira}
}
@article {1315,
	title = {Dual DC magnetron cathode co-deposition of (Al,Ti) and (Al,Ti,N) thin films with controlled depth composition},
	journal = {Vacuum},
	volume = {81},
	year = {2007},
	pages = {1503-1506},
	author = {Y. Nunes and A. Wemans and H. P. Marques and C. Marques and Q. Ferreira and O. M. N. D. Teodoro and E. Alves and M. J. P. Maneira}
}
