1. Bettelheim, K.A., Taylor, J.: A study ofEscherichia coli isolated from chronic urinary infections. J. Med. Microbiol.2, 225–236 (1969)
2. Bettelheim, K.A., Faiers, M., Shooter, R.A.: Serotypes ofEscherichia coli in normal stools. Lancet1972 II, 1224–1226
3. Bettelheim, K.A., Teo-Chan, C.H., Chandler, M.E., O'Farell, S.M., Rahamim, L., Shaw, E.J., Shooter, R.A.: Further studies ofEscherichia coli in babies after normal delivery. J. Hyg. Camb.73, 227–285 (1974)
4. Blazevic, D.J.: Improved Motility-Indol Medium. Appl. Microbiol.16, 668 (1968)
5. Ericsson, H.M., Sherris, J.C.: Antibiotic sensitivity testing. Acta Path. Microbiol. Scand., Sect. B. suppl. 217 (1971)