GORDH J:R , Torsten; HARTVIG , Per. Cerebrospinal Fluid and Plasma Concentrations of Clonidine in Pigs after Epidural, Intravenous and Intramuscular Administration. Upsala Journal of Medical Sciences, [S. l.], v. 91, n. 3, p. 311–315, 1986. DOI: 10.3109/03009738609178671. Disponível em: https://ujms.net/index.php/ujms/article/view/6917. Acesso em: 13 nov. 2026.