1. Childs, E. C.; An Introduction to the Physical Basis of Soil Water Phenomena, pp. 219–224, Wiley-Interscience, New York, U.S.A. (1969)
2. Hillel, D.; Fundamentals of Soil Physics, pp. 195–201, Academic Press, New York, U.S.A. (1980)
3. The permeability of a screen wick.
4. Jury, W. A., W. R. Gardner and W. H. Gardner; Soil Physics, 5th ed., pp. 87–94, John Wiley & Sons, New York, U.S.A. (1991)
5. The effective pore radius of screen wicks.