Antimicrobial resistance in Pasteurella and Mannheimia: epidemiology and genetic basis Corinna Kehrenberg, Gundula Schulze-Tanzil, Jean-Louis Martel, Elisabeth Chaslus-Dancla and Stefan Schwarz Vet. Res., 32 3-4 (2001) 323-339 DOI: 10.1051/vetres:2001128