J. H. Davis, Griffith, S. M., Horwath, W. R., Steiner, J. J., and Myrold, D. D.,
“Denitrification and Nitrate Consumption in an Herbaceous Riparian Area and Perennial Ryegrass Seed Cropping System”,
Soil Science Society of America Journal, vol. 72, no. 5, p. 1299, 2008.