@book{37093,
	author = {Cordes, Heinz Otto. and SpringerLink (Online service)},
	title = {Precisely Predictable Dirac Observables},
	publisher = {Springer Netherlands,},
	year = {2007.},
	series = {Fundamental Theories of Physics ;},
	address = {Dordrecht :},
	url = {http://dx.doi.org/10.1007/1-4020-5169-7}
}