1. Boulpaep, E. L.: Ion permeability of the peritubular and luminal membrane of the renal tubular cell. In: Transport und Funktion intracellulärer Elektrolyte, pp. 98?107. F. Krück, ed. München: Urban & Schwarzenberg 1967.
2. Boulpaep, E. L.: Electrophysiological properties of the proximal tubule. Importance of cellular and intercellular transport pathways. In: Symposia medica Hoechst. Electrophysiology of epithelial cells. G. Giebisch, ed. Stuttgart-New York: F. K. Schattauer (in press).
3. Boulpaep, E. L., Seely, J. F.: Electrophysiology of proximal and distal tubules in the autoperfused dog kidney. Amer. J. Physiol.221, 1084?1086 (1971).
4. Bracho, H., Erlij, D., Martínez-Palomo, A.: The site of the permeability barriers in frog skin epithelium. J. Physiol. (Lond.)213, 50?51 P (1971).
5. Curran, P. F., Macintosh, J. R.: A model system for biological water transport. Nature (Lond.)193, 347?348 (1962).