Gas Chromatographic Determination of Purines and Pyrimidines from DNA Using Ethyl Chloroformate as Derivatizing Reagent. Pakistan Journal of Analytical & Environmental Chemistry, Pakistan, v. 17, n. 1, p. 50 – 57, 2016. DOI: 10.21743/pjaec/2016.06.008. Disponível em: http://pjaec.pk/index.php/pjaec/article/view/243. Acesso em: 12 jul. 2025.