@article {Boccardi:1045963,
	title = {Influence of Varying Tune Width on the Robustness of the {LHC} Tune {PLL} and its Application for Continuous Chromaticity Measurement},
	number = {CERN-AB-2007-031. LHC-PROJECT-Report-1027. CERN-LHC-PROJECT-Report-1027},
	year = {2007},
	pages = {3 p},
	url = {http://cds.cern.ch/record/1054826/files/ab-2007-049.pdf},
	author = {Steinhagen, Ralph J and Boccardi, A and Gasior, M and Jones, R and Kasinski, KK}
}