Measurement of the B0-B̄0 oscillation frequency δmd with the decays B0→D-π+ and B0→J/ψK*0 - Aaij, R; Abellan Beteta, C; Adametz, A; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Ali, S; et al. (Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2013)