1. Anonymous: Terminology for grazing lands and grazing animals. J. Prod. Agric. 1992, 5, 191–201.
2. Bryan RP, Kerr JD: The grazing behaviour of cattle in relation to the sampling of infective nematode larvae on pasture. Vet. Parasitol. 1988, 30, 73–82.
3. Ciordia H, Neville WE, Baird DM, McCampbell HC: Internal parasitism of beef cattle on winter pastures: levels of parasitism as affected by stocking rates. Am. J. Vet. Res. 1971, 32, 1353–1358.
4. Christensen, CM: Studies of the immune response in cattle infected with normal or inhibited larvae of Ostertagia ostertagi (Trichostrongylidae). Ph.D. thesis, 1991, Royal Vet. and Agric. University, Copenhagen, Denmark.
5. Donald AD, Axelsen A, Morley FHW, Waller PJ, Donnelly JR: Growth of cattle on phalaris and lucerne pastures II. Helminth parasite populations and effects of anthelmintic treatment. Vet. Parasitol. 1979, 5, 205–222.