@inbook {bethge2013elementary,
	title = {Beam Feedback Systems},
	booktitle = {Elementary Particles - Accelerators and Colliders},
	series = {Landolt-Bornstein: Numerical Data and Functional Relationships in Science and Technology - New Series / Elementary Particles, Nuclei and Atoms},
	number = {vol.~21},
	year = {2013},
	pages = {6 p.},
	publisher = {Springer London, Limited},
	organization = {Springer London, Limited},
	isbn = {978-3-642-23052-3},
	url = {http://www.springer.com/physics/book/978-3-642-23052-3},
	author = {Steinhagen, Ralph J},
	editor = {Stephen Myers, Herwig Schopper}
}
@inbook {ChaoMessTignerZimmermann:11111,
	title = {Real-Time Measurement and Control of Tune, Coupling and Chromaticity},
	booktitle = {Handbook of Accelerator Physics and Engineering},
	year = {2013},
	pages = {362},
	publisher = {World Scientific},
	organization = {World Scientific},
	edition = {Second Edition},
	isbn = {978-981-4415-84-2},
	url = {http://www.worldscientific.com/worldscibooks/10.1142/3818},
	author = {Jones, O R and Steinhagen, Ralph J},
	editor = {Chao, A W and Mess, K H and Tigner, M and Zimmermann, F}
}
@inbook {Steinhagen:CAS,
	title = {Tune and Chromaticity Diagnostics},
	booktitle = {CAS - CERN Accelerator School: Course on Beam Diagnostics},
	number = {CERN-2009-005},
	year = {2009},
	note = {In collaboration with Synchrotron SOLEIL, Gif-sur-Yvette, France},
	publisher = {CERN},
	organization = {CERN},
	address = {Geneva},
	url = {http://cds.cern.ch/record/1071486/files/cern-2009-005.pdf},
	author = {Steinhagen, Ralph J},
	editor = {Brandt, Daniel}
}