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L.B. Davin, H.B. Wang, A.L. Crowell, D.L. Bedgar, D.M. Martin, S. Sarkanen og N.G. Lewis: Stereoselective bimolecular phenoxy radical coupling by an auxiliary (dirigent) protein without an active center i Science, 1997, 275, 5298 side 362–366; PMID8994027; doi:10.1126/science.275.5298.362.