1. Bamford CH, Brown L, Elliott A, Hanby W, Trotter IF (1954): Alpha and beta forms of polyalanine. Nature 173:27–29
2. Brown L, Trotter IF (1956): X-ray studies of Poly-alanine. Trans Faraday Soc 52:537–548
3. Capello J, Crissman J, Dorman M, Mikolajczak M, Textor G, Marquet M, Ferrari F (1990): Genetic engineering of structural protein polymers. Biotechnol Prog 6(3):198–202
4. Cappello J, McGrath K (1994): Spinning of protein polymers. In: Silk Polymers, Materials Science and Biotechnology, Kaplan D, Adams W, Farmer B, Viney C, eds. Washington DC: American Chemical Society
5. Croston C, Evans C, Smith A (1945): Zein fibers: Preparation by wet spinning. Industr Eng Chem 37:1194–1198