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dos Reis, M. and Wernisch, Lorenz and Savva, Renos (2003) Unexpected correlations between gene expression and codon usage bias from microarray data for the whole Escherichia coli K-12 genome. Nucleic Acids Research 31 (23), pp. 6976-6985. ISSN 0305-1048.
Pearl, F.M.G. and Bennett, C.F. and Bray, J.E. and Harrison, A.P. and Martin, Nigel and Shepherd, Adrian J. and Sillitoe, I. and Thornton, Janet M. and Orengo, C.A. (2003) The CATH database: an extended protein family resource for structural and functional genomics. Nucleic Acids Research 31 (1), pp. 452-455. ISSN 0305-1048.