Recent publications relating to allenic norleucines:
Amanita smithiana—taxonomy, distribution, and poisonings. Tulloss, R. E. and J. E. Lindgren. 1992. Mycotaxon 45: 373-387.
Partial purification and characterization of a toxic component of Amanita smithiana. Pelizzari, V., E. Feifel, M. M. Rohrmoser, G. Gstraunthaler, M. Moser. 1994. Mycologia 86: 555-560.