A. E.  Jolles, Etienne, R. S., and Olff, H., 
“Independent and competing disease risks: implications for host populations in variable environments.”, 
The American naturalist, vol. 167, no. 5, pp. 745-57, 2006.
 A. E.  Jolles, Etienne, R. S., and Olff, H., 
“Independent and competing disease risks: implications for host populations in variable environments.”, 
Am Nat, vol. 167, no. 5, pp. 745-57, 2006.
 A. L.  Michel, Bengis, R. G., Keet, D. F., Hofmeyr, M., de Klerk, L. M., Cross, P. C., Jolles, A. E., Cooper, D., Whyte, I. J., Buss, P., and Godfroid, J., 
“Wildlife tuberculosis in South African conservation areas: implications and challenges.”, 
Veterinary microbiology, vol. 112, no. 2-4, pp. 91-100, 2006.