Schimming, O., Challinor, V. L., Tobias, N. J., Adihou, H., Gruen, P., Poeschel, L., et al. (2015).
Structure, Biosynthesis, and Occurrence of Bacterial Pyrrolizidine Alkaloids. ANGEWANDTE CHEMIE-INTERNATIONAL
EDITION, 54(43), 12702-12705. doi:10.1002/anie.201504877.