@book{13879,
	author = {Sommaruga, Giovanni.},
	title = {Formal theories of information :},
	publisher = {Springer,},
	year = {c2009.},
	series = {Lecture notes in computer science ;},
	address = {Berlin ;},
	url = {http://springerlink.metapress.com/openurl.asp?genre=issue&issn=0302-9743&volume=5363}
}