1) K. C. Leibman: Metabolism and toxicity of styrene, Environ. Health Perspect. (Review), 11, 115-119 (1975).
2) Z. Bardodej and E. Bardodejova: Biotransformation of ethylbenzene, styrene, and α-methylstyrene in man, Am. Ind. Hyg. Assoc. J., 31 (2). 206-209 (1970).
3) H. Harkonen, P. Kalliokoski, S. Hietala, and S. Hernberg: Concentration of mandelic and phenylglyoxylic acid in urine as indicators of styrene exposure, Work Environ. Health, 11 (3), 162-165 (1974).
4) S. Horiguchi, K. Teramoto, I. Kiyota, and G. Endo: Daily variations in mandelic, phenylglyoxylic, and hippuric acids excreted in the urine of styrene workers, Sangyo Igaku, 16 (3), 228-229 (1974).
5) J. P. Buchet, R. Lauwerys, H. Roels, and M. Defeld: Evaluation of the exposure of workers to styrene by determination of its urinary metabolites, mandelic and phenylglyoxylic acids. I. Technique of determination of the metabolites by gas chromatography, Arch. Mal. Prof. Med. Trav. Secur. Soc., 35 (4-5), 511-516 (1974).