1. Campbell , W. J. L. A. Rasmussen The production, flow and distribution of meltwater in a glacier treated as a porous medium 1969
2. A theory of water percolation in snow;Colbeck;J. Glaciol.,1972
3. The capillary effects on water percolation in homogeneous snow;Colbeck;J. Glaciol.,1974
4. Colbeck , S. C. G. Davidson Water percolation through homogeneous snow 1972