1. America at the Threshold;Stafford,1991
2. Past and Present Environmental Control and Life Support Systems on Manned Spacecraft;Diamant,1990
3. Life Suppor - Future Trends and Developments;Huttenbach,1989
4. Shuttle Orbiter Environmental Control and Life Support System - Flight Experience;Winkler,1992
5. Waste Streams in a Crewed Space Habitat;Wydeven;Waste Management & Research,1991