Form factors, branching ratio and forward–backward asymmetry in B→K1ℓ+ℓ- decaysM. Ali Paracha, Ishtiaq Ahmed and M. Jamil AslamEur. Phys. J. C, 52 4 (2007) 967-973DOI: https://doi.org/10.1140/epjc/s10052-007-0422-4