1. Life Under Glass-The Inside Story of Biosphere 2;Alling,1993
2. Material Circulations in a Closed System, 932289, 23rd ICES;Ashida,1993
3. Recycling of Trace Elements required for Humans in CELSS;Ashida;Adv. Space Res.,1994
4. Construction of CEEF is Just Started, 951584, 25th ICES;Ashida,1995
5. Problems of Human Life in a CELSS, 972515, 27th ICES;Ashida,1997