Andresen-Streichert H, Jungen H, Gehl A, Müller A, Iwersen-Bergmann S. Uptake of gamma-valerolactone--detection of gamma-hydroxyvaleric acid in human urine samples. J Anal Toxicol. 2013, 37 (4): 250–4. PMID 23486087. doi:10.1093/jat/bkt013.
Andresen-Streichert H, Jungen H, Gehl A, Müller A, Iwersen-Bergmann S. Uptake of gamma-valerolactone--detection of gamma-hydroxyvaleric acid in human urine samples. J Anal Toxicol. 2013, 37 (4): 250–4. PMID 23486087. doi:10.1093/jat/bkt013.