The role of cattle in the volatile loss of nitrogen from a shortgrass steppe - Schimel, D. S.; Parton, W. J.; Adamsen, F. J.; Woodmansee, R. G.; Senft, R. L.; Stillwell, M. A. (Springer, 1986)
http://dx.doi.org/10.1007/BF02186964
Keywords: V; TE-TZ