Billeter, M., Riek, R., Wider, G., Hornemann, S., Glockshuber, R., & Wüthrich, K. (1997). Prion protein NMR structure and species barrier for prion diseases. The National Academy of Sciences of the USA.

Billeter, Martin, Roland Riek, Gerhard Wider, Simone Hornemann, Rudi Glockshuber, و Kurt Wüthrich. Prion Protein NMR Structure and Species Barrier for Prion diseases. The National Academy of Sciences of the USA, 1997.

Billeter, Martin, et al. Prion Protein NMR Structure and Species Barrier for Prion diseases. The National Academy of Sciences of the USA, 1997.