Bott, S., JamesG., B., Wolfgang, M., Simon, B., & StephenJ., L. (1989). Proposal for a planar tetramanganese center in the oxygen evolving complex of photosystem II. Journal of Inorganic Biochemistry, 36(3-4), p. 226. doi:10.1016/0162-0134(89)84236-9

Bott, Simon, Bentsen JamesG., Micklitz Wolfgang, Bott Simon, and Lippard StephenJ. "Proposal for a Planar Tetramanganese Center in the Oxygen Evolving Complex of Photosystem II." Journal of Inorganic Biochemistry 36, no. 3-4 (1989): 226.

Bott, Simon, et al. "Proposal for a Planar Tetramanganese Center in the Oxygen Evolving Complex of Photosystem II." Journal of Inorganic Biochemistry 36.3-4 (1989): 226.