  The time-dependent CP-violating observables accessible through Bs->DsK decays
have been measured for the first time using data corresponding to an integrated
luminosity of 1 inverse fb collected in 2011 by the LHCb detector. Using these
observables, the CKM angle gamma is determined to be (115 -43 +28) modulo 180
degrees at 68% CL, where the uncertainty contains both statistical and
systematic components.
