1. Editorial: Gut as a reservoir for resistant bacteria. Lancet 1979, 945–946.
2. European Economic Community: Detection and identification of antibiotics present in animal feed stuffs by means of a bacterial spectrum. Eur. Comm. Markt Gazette. 1972, 123, (71–92).
3. Harbour HE, Abell JM, Cavanagh P, Clegg PG, Gould CM, Ellis P, Pyke M, Rilley CT, Laver U: Salmonella - the food poisiner. Brit. Assoc. Adv. Sei. Clumbury Cotterell Press Berkham-sted, Herts. 1978.
4. Holmberg SD, Osterholm MT, Senger KA, Cohen ML: Drug resistant salmonella from animals fed antimicrobials. New Eng. J. Med. 1984a, 377, (617–622).
5. Holmberg SD, Wells JG, Cohen ML: Animal-toman transmission of antimicrobial-resistant salmonella. Investigations of U.S. outbreaks 1971-1983. Science 1984b, 225, (833–835).