Beltrán, M. C., R. L. Althaus, A. Molina, M. I. Berruga, and M. P. Molina. “Analytical Strategy for the Detection of Antibiotic Residues in Sheep and goat’s Milk”. Spanish Journal of Agricultural Research, Vol. 13, no. 1, Jan. 2015, p. e0501, doi:10.5424/sjar/2015131-6522.