Powell, J. G., Yazwinski, T. A., Tucker, C. A., Johnson, Z. B., Brown, A. H., Reynolds, J. L. and Clymer, B. C. (2009) “Evaluation of efficacy and benefit of ivermectin with clorsulon and long-acting moxidectin in replacement beef heifers”, The Bovine Practitioner, 43(2), pp. 97–105. doi: 10.21423/bovine-vol43no2p97-105.