A pharmacokinetic model to document the actual disposition of topical ivermectin in cattle Céline M. Laffont, Alain Bousquet-Mélou, David Bralet, Michel Alvinerie, Johanna Fink-Gremmels and Pierre-Louis Toutain Vet. Res., 34 4 (2003) 445-460 DOI: 10.1051/vetres:2003014