1. Alva-Valdes R, Wallace DH, Holste JE, Egerton JR, Cox JL, Wooden JW, Barrick RA (1986) Efficacy of ivermectin in a topical formulation against induced gastrointestinal and pulmonary nematode infections, and naturally acquired grubs and lice in cattle. Am. J. Vet. Res. 47:2389–2392.
2. Armour J, Bairden K, Batty AF, Davison CC, Ross D (1985) Persistent anthelmintic activity of ivermectin in cattle. Vet. Rec. 116:151–153.
3. Armour J, Bairden K, Ryan WG (1988) Immunity of ivermectin treated cattle to challenge from helminth parasites in the following season. Vet. Rec. 122:223–225.
4. Baggott DG, Batty AF, Ross DB (1986) The control of mature nematode infections in cattle by sustained delivery of ivermectin. Proceedings of the 14th World Congress on Diseases of Cattle, Vol. 1, Dublin, Ireland, pp 160–165.
5. Barragry TB (1987) A review of the pharmacology and clinical uses of ivermectin. Can. Vet. J. 28:512–517.