1. National Committee for Clinical Laboratory Standards: Performance standards for antimicrobial disk susceptibility tests. Approved Standard M2-A3. Villanova, PA, 1984.
2. Kurzynski, T. A., Yrios, J. W., Helstad, A. G., Field, C. R.: Aerobically incubated thioglycollate broth disk method for antibiotic testing of anaerobes. Antimicrobial Agents and Chemotherapy 1976, 10: 727–732.
3. National Committee for Clinical Laboratory Standards: Alternative methods for antimicrobial susceptibility testing of anaerobic bacteria. Proposed Standard M17-P. Villanova, PA, 1985.
4. National Committee for Clinical Laboratory Standards: Standard methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically. Approved Standard M7-A. Villanova, PA, 1985.
5. Jones, R. N., Barry, A. L., Fuchs, P. C., Thornsberry, C.: Disk diffusion susceptibility testing of two macrolide antimicrobial agents: revised interpretive criteria for erythromycin and preliminary guidelines for roxithromycin (RU 965). Journal of Clinical Microbiology 1986, 24: 233–239.