Inoue, O.; Seiji, K.; Kawai, T.; Watanabe, T.; Jin, C.; Cai, S. X.; Chen, Z.; Qu, Q. S.; Zhang, T.; Ikeda, M. (1993). "Excretion of methylhippuric acids in urine of workers exposed to a xylene mixture: Comparison among three xylene isomers and toluene". International Archives of Occupational and Environmental Health. 64 (7). ss. 533-9. doi:10.1007/bf00381104. PMID8482596.
Kira S (1977). "Measurement by gas chromatography of urinary hippuric acid and methylhippuric acid as indices of toluene and xylene exposure". Occupational and Environmental Medicine. 34 (305–309). ss. 305-309. doi:10.1136/oem.34.4.305. PMC1008281 $2. PMID588486.
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ncbi.nlm.nih.gov
Inoue, O.; Seiji, K.; Kawai, T.; Watanabe, T.; Jin, C.; Cai, S. X.; Chen, Z.; Qu, Q. S.; Zhang, T.; Ikeda, M. (1993). "Excretion of methylhippuric acids in urine of workers exposed to a xylene mixture: Comparison among three xylene isomers and toluene". International Archives of Occupational and Environmental Health. 64 (7). ss. 533-9. doi:10.1007/bf00381104. PMID8482596.
Kira S (1977). "Measurement by gas chromatography of urinary hippuric acid and methylhippuric acid as indices of toluene and xylene exposure". Occupational and Environmental Medicine. 34 (305–309). ss. 305-309. doi:10.1136/oem.34.4.305. PMC1008281 $2. PMID588486.