Morter, R. L., Kazacos, K. R. and Amstutz, H. E. (1984) “Comparative clinical efficacy of fenbendazole and thiabendazole in feedlot heifers”, The Bovine Practitioner, 1984(19), pp. 213–215. doi: 10.21423/bovine-vol1984no19p213-215.