D. T. Tingey, Johnson, M. G., E. Lee, H., Wise, C., Waschmann, R., Olszyk, D. M., Watrud, L. S., and Donegan, K. K.,
“Effects of elevated CO2 and O3 on soil respiration under ponderosa pine”,
Soil Biology and Biochemistry, vol. 38, no. 7, pp. 1764 - 1778, 2006.
L. S. Watrud, Martin, K., Donegan, K. K., Stone, J. K., and Coleman, C. G.,
“Comparison of taxonomic, colony morphotype and PCR-RFLP methods to characterize microfungal diversity”,
Mycologia, vol. 98, no. 3, pp. 384 - 392, 2006.