1. Effects of gastrointestinal nematode parasites on performance in feedlot cattle;Ames;J. Anim. Sci.,1968
2. Experimental Ostertagia ostertagi infections in calves: results of two regimens of multiple inoculations;Anderson;Am. J. Vet. Res.,1967
3. Density dependent survival in populations of Ostertagia ostertagi;Anderson;Int. J. Parasitol.,1977
4. DYSMAP 2 User Manual;Anon.,1987
5. Armour, J., 1967. Ostertagia ostertagi infections in the bovine: field and experimental studies. Thesis. University of Glasgow.