1. Double-blind trial to compare ampicillin, cephalexin, co-trimoxazole, and trimethoprim in treatment of urinary infection;Brumfitt, W.; Pursell, R.;Brit. med. J,1972
2. Combined antibacterial action in vitro of trimethoprim and sulphonamides;Bushby, S.R.M.;Postgrad. med. J,1969
3. Trimethoprim: laboratory and clinical studies;Darrell, J.H.; Garrod, L.P.; Waterworth, P.M.;J. clin. Path,1968
4. Trimethoprim resistance determined by R factors;Fleming, M.P.; Datta, N.; Gruneberg, R.N.;Brit. med. J,1972
5. Trimethoprim-resistant coliforms;Lacey, R.W.; Gillespie, W.A.; Bruten, D.M.; Lewis, E.L.;Lancet,1972