Rahman, M., M. Mostofa, M. Jahan, and M. Kamal. “Comparative Efficacy of Neem Leaves and Ivermectin (Ivomec®) Against Ectoparasites in Calves”. Journal of the Bangladesh Agricultural University, vol. 7, no. 1, Apr. 2010, pp. 73-78, doi:10.3329/jbau.v7i1.4802.