@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}
}