Title: Nakamura, S., et al., In vitro and in vivo antibacterial activities of AT-4140, a new broad-spectrum quinolone. Antimicrob Agents Chemother, 1989. 33(8): p. 1167-73.
Title: Pan, X.S. and L.M. Fisher, Targeting of DNA gyrase in Streptococcus pneumoniae by sparfloxacin: selective targeting of gyrase or topoisomerase IV by quinolones. Antimicrob Agents Chemother, 1997. 41(2): p. 471-4.