1. Amarger N et al (1988) In W. Klingmuller, ed, Risk Assessment for Deliberate Releases,pp. 29–35.
2. Atlas RM (1991) ASM News, 57, 630–632.
3. Broughton WJ et al (1987) FEMS Microbiol. Lett. 40, 251–255.
4. Bruce KD et al (1992) Appl. Environ. Microbiol. 58, 3413–3416.
5. Chen Z-L (1992) In 2nd Int.Symp.on The Biosafety Results of Field Tests of Genetically Modified Plants and Microorganisms, pp. 53, Goslar, Germany.