@article {Abreu:2000sh,
	title = {{Measurement of the $B^0_{s}$ lifetime and study of $B^0_{s} - \bar{B}^0_s$ oscillations using $D_s \ell$ events}},
	journal = {Eur. Phys. J.},
	volume = {C16},
	year = {2000},
	pages = {555},
	doi = {10.1007/s100520000415},
	author = {Abreu, P. and others}
}
