Zapata Salas, R. et al. 2013. In vitro Anthelmintic Activity of Oily Extracts of Azadirachta indica and Aqueous Extracts of Nicotiana tabacum on Gastrointestinal Nematodes in Goats. Revista de Medicina Veterinaria. 26 (Jan. 2013), 25–36. DOI:https://doi.org/10.19052/mv.1134.