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.
M. J. Louie, Shelby, P. M., Smesrud, J. S., Gatchell, L. O., and Selker, J.,
“Field evaluation of passive capillary samplers for estimating groundwater recharge”,
Water Resources Research, vol. 36, pp. 2407–2416, 2000.
M. T. Walter, Kim, J. - S., Steenhuis, T. S., Parlange, J. - Y., Heilig, A., Braddock, R. David, Selker, J., and Boll, J.,
“Funneled flow mechanisms in a sloping layered soil: Laboratory investigation”,
Water Resources Research, vol. 36, pp. 841–849, 2000.