F. M. Brandi-Dohrn, Hess, M., Selker, J., and Dick, R. P.,
“Field evaluation of passive capillary samplers”,
Soil Science Society of America Journal, vol. 60, pp. 1705–1713, 1996.
F. M. Brandi-Dohrn, Hess, M., Selker, J., Dick, R. P., Kauffman, S. M., and Hemphill, D. D.,
“Nitrate leaching under a cereal rye cover crop”,
Journal of Environmental Quality, vol. 26, pp. 181–188, 1997.