Birr, Christian Max Planck Institute for Medical Research, Max Planck Society;
https://doi.org/10.1111/j.1399-3011.1975.tb02460.x (Any fulltext)
Trudelle, Y., & Birr, C. (1975). Synthesis of the sequential polypeptide Poly[Cys(ACM)-Ser-Phe-Glu-GLU] as a model for hydrolytic enzymes. Chemical Biology & Drug Design, 7(5), 403-410. doi:10.1111/j.1399-3011.1975.tb02460.x.