Capillary Gas Chromatographic Determination of Gamma Aminobutyric acid and Putrescine in Cerebrospinal Fluidusing Trifluoroacetylacetone as Derivatizing Reagent. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 19, n. 1, p. 28 – 35, 2018. DOI: 10.21743/pjaec/2018.06.02. Disponível em: https://pjaec.pk/index.php/pjaec/article/view/194. Acesso em: 5 nov. 2025.