ZOU, Deqing; ZOU, Yan; YANG, Yaling. Determination of Morphine in Urine by HPLC Using Ion-Pair Extraction. Asian Journal of Chemistry, [S. l.], v. 25, n. 5, p. 2469–2473, 2012. DOI: 10.14233/ajchem.2013.13410. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/25_5_26. Acesso em: 3 jul. 2024.