Kricheldorf, Hans, R. (2006), "Polypeptides and 100 Years of Chemistry of α-Amino Acid N-Carboxyanhydrides", Angewandte Chemie International Edition, 45 (35): 5752–5784, doi:10.1002/anie.200600693, PMID16948174{{citation}}: CS1 maint: multiple names: authors list (link)
Kricheldorf, Hans, R. (2006), "Polypeptides and 100 Years of Chemistry of α-Amino Acid N-Carboxyanhydrides", Angewandte Chemie International Edition, 45 (35): 5752–5784, doi:10.1002/anie.200600693, PMID16948174{{citation}}: CS1 maint: multiple names: authors list (link)