1. Biosphere 2: The Human Experiment;Allen,1991
2. Artificial biospheres as a model for global ecology on planet Earth;Allen;Life Support Biosphere Sci.,2001
3. Experiments on the closed ecological system in the Biosphere 2 Test Module;Alling,1993
4. Ecological Microcosms,1993
5. Pattern and Process in a Forested Ecosystem;Bormann,1979