1. ISO 11137-2 Sterilization of health care products — Radiation — Part 2: Establishing the sterilization dose
2. ISO 11137-3 Sterilization of health care products — Radiation — Part 3: Guidance on dosimetric aspects
3. NHB 5340.1A October 1968 The microbiological examination of space hardware National Aeronautics and Space Administration Washington DC 20546
4. Microbiologic assay of space hardware;Favero M.;Environ. Biol. Med,1971
5. Comparison of media for detection of fungi on spacecraft;Herring C.;Appl. Microbiol,1974