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Sonobe, Hiromi; Kamps, Laverne R.; Mazzola, Eugene P.; Roach, John A. G. Isolation and identification of a new conjugated carbofuran metabolite in carrots: angelic acid ester of 3-hydroxycarbofuran. Journal of Agricultural and Food Chemistry. 1981, 29 (6): 1125–9. PMID 7320331. doi:10.1021/jf00108a006.