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Cao RX, Ma LQ, Chen M, Singh SP, Harris WG.Cao RX, et al. Among authors: singh sp.Environ Pollut. 2003;122(1):19-28. doi: 10.1016/s0269-7491(02)00283-x.Environ Pollut. 2003.PMID: 12535592
Cao X, Ma LQ, Chen M, Singh SP, Harris WG.Cao X, et al. Among authors: singh sp.Environ Sci Technol. 2002 Dec 15;36(24):5296-304. doi: 10.1021/es020697j.Environ Sci Technol. 2002.PMID: 12521153
Barbhuiya NH, Nair AM, Dixit N, Singh SP.Barbhuiya NH, et al. Among authors: singh sp.ACS Omega. 2024 May 13;9(21):22819-22830. doi: 10.1021/acsomega.4c00959. eCollection 2024 May 28.ACS Omega. 2024.PMID: 38826522Free PMC article.