1. Prokai, Laszlo. “Peptide drug delivery into the central nervous system.” In Progress in Drug Research, Vol. 51, E.M. Jucker, ed. Basel: Birkhäuser, 1998.
2. Brightman, Milton W. “Ultrastructure of brain endothelium,” In Physiology and Pharmacology of the Blood-Brain Barrier, Michael W.B. Bradbury, ed. Berlin: Springer-Verlag, 1992.
3. Dayson, H., Welch, K., Segal, M.B., The Physiology and Pathophysiology of the Cerebrospinal Fluid, Edinburgh, UK: Churchill Livingstone, 1987; pp. 105–118.
4. Crone, Christian. “The blood-brain barrier - facts and questions.” In Ion Homeostasis of the Brain, B.K. Siesjo, S.C. Sorensen, eds. Copenhagen: Munksgaard, 1971.
5. Tamai, I., Tsuji, A. Transporter-mediated permeation of drugs across the blood-brain barrier. J Pharm Sci 2000; 89: 1371–1388.