@article {Abreu:1999xe,
	title = {{Upper limit for the decay $B^{-} \to \tau^{-}$ anti-neutrino ($\tau$) and measurement of the $b \to \tau$ anti-neutrino ($\tau$) $X$ branching ratio}},
	journal = {Phys. Lett.},
	volume = {B496},
	year = {2000},
	pages = {43-58},
	doi = {10.1016/S0370-2693(00)01274-0},
	author = {Abreu, P. and others}
}
