1. Humoral antibody response to bovine leukemia virus infection in cattle and sheep;Bex;Cancer Res.,1979
2. Ferrer , J. F. 1979 Diagnosis of bovine leukosis: basic concepts and methodology. Proceedings of Bovine Leukosis Symposium, College Park, Maryland (May 22-23, 1979) 77 92
3. Bovine hematology. II. Comparative breed studies on the leukocyte parameters of several European cattle breeds as determined in national laboratories;Lorenz;Zbl. Vet. Med. B,1978
4. Mammerickx , M. «Rapports d'Activité» Institut National de Recherches Vétérinaires, Bruxelles, Ministry of Agriculture 1969 1980