L. Li, Lockington, D. A., Parlange, M. B., Stagnitti, F., Jeng, D. - S., Selker, J., Telyakovskiy, A. S., Barry, D. A., and Parlange, J. - Y.,
“Similarity solution of axisymmetric flow in porous media”,
Advances in water resources, vol. 28, pp. 1076–1082, 2005.