1. Fellenius, E. et al. in Hydrogen Ion Transport in Epithelia (eds Schulz, I., Sachs, G., Forte J & Ullrich, K. J.) 193–202 (Elsevier, Amsterdam, 1980).
2. Olbe, L., Sjöstrand, S.-E. & Fellenius, E. in Gastrins and the Vagus (eds Rehfeld, J. F. & Amdrup, E.) 245–250 (Academic, New York, 1979).
3. Sjöstrand, S.-E., Ryberg, B. & Olbe, L. Acta physiol. scand. spec. Suppl., 181–185 (1978).
4. Olbe, L. et al. Scand. J. Gastroenterol. Suppl. 55, 131–133 (1979).
5. Fellenius, E. et al. in Hormone Receptors in Digestion and Nutrition (eds Rosselin, G., Fromageot, P . & Bonfils, S.) 355–360 (Elsevier, Amsterdam, 1979).