1. Amide bond formation: beyond the myth of coupling reagents
2. T. Wieland and M.Bodanszky , The World of Peptides: A Brief History of Peptide Chemistry , Springer , 1991
3. C. E. Mabermann , in Encyclopedia of Chemical Technology , ed. J. I. Kroschwitz , Wiley , New York , 1991 , vol. 1 , pp. 251–266
4. D. Lipp , in Encyclopedia of Chemical Technology , ed. J. I. Kroschwitz , Wiley , New York , 1991 , vol. 1 , pp. 266–287
5. R. Opsahl , in Encyclopedia of Chemical Technology , ed. J. I. Kroschwitz , Wiley , New York , 1991 , vol. 2 , pp. 346–356