1. Anderson, D. E.: 1983, ?Turbulent Exchange of Carbon Dioxide, Water Vapor, Heat and Momentum over Crop Surfaces?, Ph.D. Dissertation. University of Nebraska-Lincoln. 186 pp.
2. Baldocchi, D. D., Verma, S. B., and Rosenberg, N. J.: 1981, ?Mass and Energy Exchanges of a Soybean Canopy under Various Environmental Regimes?, Agron. J. 73, 706?710.
3. Baldocchi, D. D.: 1982, ?Mass and Energy Exchanges of Soybeans: Microclimate Plant Architectural Interactions?, Ph.D. Dissertation. University of Nebraska-Lincoln. 265 pp.
4. Bingham, G. E., Gillespie, C. H., and McQuaid, J. H.: 1978, ?Development of a Miniature, Rapid Response CO2 Sensor?, Lawrence Livermore National Laboratory, Rept. UCRL-52440.
5. Brach, E. J., Desjardins, R. L., St. Amour, G. T.: 1981, ?Open Path CO2 Analyzer?, J. Phys. Elec. Sci. Instrum. 14, 1415?1419.