1. Jorgensen J. H. C. Corlett-Knapp G. V. Doern et al. 1991. Multicenter comparison of the use of Haemophilus test medium for broth dilution susceptibility testing of Streptococcus pneumoniae abstr. C-164 p. 369. Abstr. 91st Gen. Meet. Am. Soc. Microbiol. 1991.
2. Pneumococcal resistance to antibiotics;Klugman K. P.;Clin. Microbiol. Rev.,1990
3. National Committee for Clinical Laboratory Standards. 1990. Performance standards for antimicrobial disk susceptibility tests vol. 10 no. 7. National Committee for Clinical Laboratory Standards Villanova Pa.
4. National Committee for Clinical Laboratory Standards. 1990. Methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically. Approved standard M7-A2. National Committee for Clinical Laboratory Standards Villanova Pa.
5. False susceptible penicillin G MICs for Streptococcus pneumoniae with a commercial microdilution system;Shanholtzer C. J.;Am. J. Clin. Pathol.,1986