PDBeCIF: an open-source mmCIF/CIF parsing and processing package. - Ginkel, Glen van; Pravda, Lukás; Dana, Jose M.; Varadi, Mihaly; Keller, Peter A.; Anyango, Stephen; Velankar, Sameer (BMC Bioinform., 2021)

E-MSD: an integrated data resource for bioinformatics. - Golovin, Adel; Oldfield, Thomas J.; Tate, John G.; Velankar, Samir S.; Barton, Geoffrey J.; Boutselakis, Harry; Dimitropoulos, Dimitris; Fillon, Joël; Hussain, A.; Ionides, John M. C.; John, Melford; Keller, Peter A.; et al. (Nucleic Acids Res., 2004)

E-MSD: the European Bioinformatics Institute Macromolecular Structure Database. - Boutselakis, Harry; Dimitropoulos, Dimitris; Fillon, Joël; Golovin, Adel; Henrick, Kim; Hussain, A.; Ionides, John M. C.; John, Melford; Keller, Peter A.; Krissinel, Evgeny B.; McNeil, P.; Naim, Avi; et al. (Nucleic Acids Res., 2003)