1. Arrested development in cattle nematodes with special reference to Ostertagia ostertagi;Armour,1983
2. The inhibition of development of Ostertagia ostertagi - a diapause phenomenon in a nematode;Armour;Parasitology,1974
3. Persistent anthelmintic activity of ivermectin in cattle;Armour;Vet. Rec.,1985
4. Anthelmintic efficacy of ivermectin against immature gastrointestinal and pulmonary nematodes of calves;Benz;Am. J. Vet. Res.,1981
5. Anthelmintic activities of ivermectin against immature and adult Dictyocaulus viviparus;Benz;Am. J. Vet. Res.,1984