1. Stereochemistry of polypeptide chain configurations;Ramachandran;J Mol Biol,1963
2. The folded conformations of globular proteins. Proteins: structures and molecular properties;Creighton,1993
3. The biophysical chemistry of nucleic acids & proteins;Creighton,2010
4. Protein structure. Introduction to proteins: structure function and motion;Kessel,2011
5. Protein structure. Introduction to proteins: structure function and motion;Kessel,2011