1. Free-air CO2 enrichment field experiments: an historical overview;Allen,1992
2. Field techniques for exposure of plants and ecosystems to elevated CO2 and other trace gases;Allen,1992
3. Signal Delay and Time Constant of the CO2 Concentration Measurement System of the FACE Experiment at Maricopa, AZ;Farrow;Brookhaven National Laboratory Informal Report No. 48282,1992
4. FACE: Free-Air CO2 Enrichment for Plant Research in the Field,1992
5. The FACE program;Hendrey;Agric. For. Meteorol.,1994