The negative effects of the residues of ivermectin in cattle dung using a sustained-release bolus on Aphodius constans (Duft.) (Coleoptera: Aphodiidae)Faiek Errouissi, Michel Alvinerie, Pierre Galtier, Dominique Kerbœuf and Jean-Pierre LumaretVet. Res., 32 5 (2001) 421-427DOI: https://doi.org/10.1051/vetres:2001134