4[3]Osamu Kurahashi,Kenzo Yokozeki,et al.Production of L- Tryptophan by 5 - Fluorotryptophan and Indolmycin Resistant Mutants of Bacillus Substilis K[J].Agric.Biol.Chem,1987,51(1) :231~235
5[4]Osamu Kurahashi,Mayumi Noda- Watanabe,et al.Production of L- Tryptophan by Azaserine,6 - Diazo - 5 - oxo - L- norleucine and Cinnamate- resistant Mutants of Bacillus Substilis K[J].Agric.Biol.Chem.,1987,51(7):1791~1797
6[5]Isamu Shiio,Shin- ichi Sugimoto,et al.Production of L- Tryptophan by sulfonamide - resistant Mutants[J].Agric.Biol.Chem.,1984,48(8) :2073~2080