TY  - RPRT
TI  - Two-loop QCD corrections to b-->c transitions at zero recoil.
AU  - A Czarnecki
PY  - 1996
DO  - 10.1103/physrevlett.76.4124
UR  - https://pubmed.ncbi.nlm.nih.gov/10061207/
ID  - 10061207
ER  -