@article {Abreu:2001um,
	title = {{Measurement of the semileptonic b branching fractions and average b mixing parameter in Z decays}},
	journal = {Eur. Phys. J.},
	volume = {C20},
	year = {2001},
	pages = {455-478},
	doi = {10.1007/s100520100690},
	author = {Abreu, P. and others}
}
