1. Andrewes, C. H.: The natural history of the common cold. Lancet 1949 I, 7.
2. Hilding, A. C.: Summary of some known facts concerning the common cold., Ann. of Otol. 53, 444 (1944).
3. Horsfall, FR. L. Jr.: Vgl. Rivers.
4. Keefer, C. S.: Control of Common Resp. Infections. J. Amer. med. Assoc. 121, 802 (1943).
5. Kerr, W. J., and J. B. Lagen: The Common Cold, Bd. 4, S 939. 1938. In H. A. Christian, The Oxford Medicine, New York: Oxford Univ. Press 1921.