1. P. Gambino, T. Mannel and N. Uraltsev, B → D* at zero recoil revisited, Phys. Rev. D 81 (2010) 113002 [ arXiv:1004.2859 ] [ INSPIRE ].
2. I.I. Bigi, M.A. Shifman, N. Uraltsev and A.I. Vainshtein, Sum rules for heavy flavor transitions in the SV limit, Phys. Rev. D 52 (1995) 196 [ hep-ph/9405410 ] [ INSPIRE ].
3. T. Mannel, S. Turczyk and N. Uraltsev, Higher Order Power Corrections in Inclusive B Decays, JHEP 11 (2010) 109 [ arXiv:1009.4622 ] [ INSPIRE ].
4. I.I. Bigi, M.A. Shifman, N. Uraltsev and A.I. Vainshtein, High power n of m b in beauty widths and N = 5 → ∞ limit, Phys. Rev. D 56 (1997) 4017 [ hep-ph/9704245 ] [ INSPIRE ].
5. A. Czarnecki, K. Melnikov and N. Uraltsev, NonAbelian dipole radiation and the heavy quark expansion, Phys. Rev. Lett. 80 (1998) 3189 [ hep-ph/9708372 ] [ INSPIRE ].