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pubmed.ncbi.nlm.nih.gov
Kihara D, Skolnick J (December 2003). “The PDB is a covering set of small protein structures”. Journal of Molecular Biology334 (4): 793–802. doi:10.1016/j.jmb.2003.10.027. PMID14636603.
Cheek S, Krishna SS, Grishin NV (May 2006). “Structural classification of small, disulfide-rich protein domains”. Journal of Molecular Biology359 (1): 215–37. doi:10.1016/j.jmb.2006.03.017. PMID16618491.
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