Morton, B. R., & Levin, J. A. (1997). The atypical codon usage of the plant psbA gene may be the remnant of an ancestral bias. The National Academy of Sciences of the USA.

Morton, Brian R., و Justine A. Levin. The Atypical Codon Usage of the Plant PsbA Gene May Be the Remnant of an Ancestral bias. The National Academy of Sciences of the USA, 1997.

Morton, Brian R., و Justine A. Levin. The Atypical Codon Usage of the Plant PsbA Gene May Be the Remnant of an Ancestral bias. The National Academy of Sciences of the USA, 1997.