1. Genetically Modified Organisms (Contained Use) Regulations 1992;Official Journal of the European Communities,1990
2. US Department of Health and Human Services, 1997, National Institutes of Health, Guidelines for Research Involving Recombinant DNA Molecules (Appendix K), Fed Register, 5 Jul 94 (59 FR 34496) and amendments to 31 Oct 97 (62 FR 59032). See: www.nih.gov/od/ orda/toc.htm.
3. Asilomar Conference on Recombinant DNA Molecules
4. Risk: Analysis,1992
5. The specifications of static seals for contained operations: an engineering appraisal;Titchener-Hooker;Pharm Technol Europe,1993