David Keith Todd
Jacob Bear
Christopher M. Palmer
Robert Bowen
Neal Wilson
William Clarence Walton
Evan K. Nyer
Robert C. Knox
Marco Vighi
Lloyd, J. W.
Larry W. Canter
David S. Brown
Jean J. Fried
Andrée Lallemand-Barrès
A. G. Brown
H.P. Nachtnabel
Symposium on Water in the Unsaturated Zone Wageningen 1966.
J. A. Sahuquillo
NATO Advanced Research Workshop on Estimation of Natural Recharge of Groundwater (1987 Antalya, Turkey)