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Liu JQ, Dairi T, Itoh N, Kataoka M, Shimizu S (July 2003). "A novel enzyme, D-3-hydroxyaspartate aldolase from Paracoccus denitrificans IFO 13301: purification, characterization, and gene cloning". Applied Microbiology and Biotechnology. 62 (1): 53–60. doi:10.1007/s00253-003-1238-2. PMID12835921.