1. Blähser, S., Simon, E.: Immunocytochemical studies on vasotocinergic neurons in the hypothalamus of osmotically stressed mallards. Gen. Comp. Endocrinol.34, 67 (1978)
2. Bouverot, P., Hildwein, G., LeGoof, D.: Evaporative water loss, respiratory pattern, gas exchange and acid-base balance during thermal panting in Pekin ducks exposed to moderate heat. Resp. Physiol.21, 255?269 (1974)
3. Burford, H.J., Bond, R.F.: Avian cardiovascular parameters: effect of intra-venous osmotic agents, relation to salt gland secretion. Experientia24, 1086?1088 (1968)
4. Hammel, H.T., Maggert, J.E., Simon, E., Crawshaw, L., Kaul, R.: Thermo- and osmoregulatory responses induced by heating and cooling the rostral brainstem of the Adelie penguin. In: Adaptations within antarctic ecosystems. Llano G.A. (ed.) pp. 489?500. Washington D.C.: Smithsonian Institution 1977
5. Hammel, H.T., Simon-Oppermann, Ch., Simon, E.: Properties of body fluids which relate to rate of salt gland secretion in Pekin duck. Fed. Proc.37, 624 (1978)