1. Comparative in vitro resistance of staphylococci to penicillin and to sodium sulfathiazole;Spink,1944
2. Observations on sensitivity of staphylococci to penicillin;North;M. J. Australia,1945
3. Resistance of Staphylococcus aureus to action of penicillin;Rammelkamp,1942
4. Action of penicillin on staphylococcus in vitro;Rantz;J. Immunol.,1944
5. Penicillin resistant staphylococci;Bondi,1945