1. Penicillinaseproducing Neisseria gonorrhoeae;Ashford, W.A.; Golash, R.G.; Hemming, V.G.;Lancet,1976
2. Percival A, Corkill JE, Arya OP, et al. Penicillinase-producing gonococci in Liverpool. Lancet 1976; ii: 1379-82.
3. Beta-lactamase-producing penicillin-resistant gonococcus;Phillips, I.;Lancet,1976
4. Plasmidmediated beta-lactamase production in Neisseria gonorrhoeae;Elwell, L.P.; Roberts, M.; Mayer, L.W.; Falkow, S.;Antimicrob Agents Chemother,1977
5. Evidence for two distinct types of penicillinase-producing Neisseria gonorrhoeae;Perine, P.L.; Thornsberry, C.; Schalla, W.;Lancet,1977