George, Richard J. (janeiro de 1992). «Hydraulic properties of groundwater systems in the saprolite and sediments of the wheatbelt, Western Australia». Elsevier B.V. Journal of Hydrology. 130 (1–4): 251. Bibcode:1992JHyd..130..251G. doi:10.1016/0022-1694(92)90113-A
George, Richard J. (janeiro de 1992). «Hydraulic properties of groundwater systems in the saprolite and sediments of the wheatbelt, Western Australia». Elsevier B.V. Journal of Hydrology. 130 (1–4): 251. Bibcode:1992JHyd..130..251G. doi:10.1016/0022-1694(92)90113-A