The Catalytic Site Atlas: a resource of catalytic sites and residues identified in enzymes using structural data. - Craig T. Porter; Gail J. Bartlett; Janet M. Thornton (Nucleic Acids Res., 2004)

BiopLib and BiopTools - a C programming library and toolset for manipulating protein structure. - Craig T. Porter; Andrew C. R. Martin (Bioinform., 2015)