1. Lonberg-Holm, K., Crowell, R. L., Philipson, L.: Unrelated animal viruses share receptors. Nature259, 679?681 (1976).
2. Crowell, R. L.: Comparative Generic Characteristics of Picornavirus Receptor Interactions. In:Beers, R. F., Bassett, E. G. (eds.), Cell Membrane Receptors for Viruses, Antigens and Antibodies, Polypeptides, Hormones and Small Molecules. New York: Raven Press 1976.
3. Spier, R. E., Clarke, J. B., Preston, K. J., Mowat, G. N.: The selection of a new clone (AC 9) of BHK 21 C 13 suspension cells and its enhanced susceptibility to a discriminating strain of FMD virus. Bull. Off. int. Epiz.91, 65?78 (1979).
4. Clarke, J. B., Spier, R. E.: Variation in the susceptibility of BHK populations and cloned cell lines to three strains of Foot and Mouth Disease Virus. Arch. Virol.63, 1?9 (1980).
5. Spier, R. E., Staple, R. F., Prince, M., Rowe, L., Fletton, B., Mowat, G. N.: A simplified process for the production of Foot-and-Mouth Disease vaccine from BHK21 Clone 13 suspension cells grown in 10-litre Pyrex reagent bottles. Bull. Off. int. Epiz.85, 995?1010 (1976).