1. Andrewes, C., andH. G. Pereira: Viruses of vertebrates. 3rd ed. London: Baillière & Tindall, 1972.
2. Betts, A. O., N. Edington, A. R. Jennings, andS. E. Reed: Studies on a rhinovirus (EC 11) derived from a calf. II. Disease in calves. J. comp. Path.81, 41?48 (1971).
3. Bögel, K.: Bovine rhinoviruses. J. Amer. Vet.-Med. Ass.152, 780?783 (1968).
4. Bögel, K., andH. Böhm: Ein Rhinovirus des Rindes. Zbl. Bakt. I. Abt. Orig.187, 2?14 (1962).
5. Dimmock, N.J., andD. A. J. Tyrrell: Some physicochemical properties of rhinoviruses. Brit. J. exp. Path.45, 271?280 (1964).