Doerr, S., Keizer, J., Doerr, S., Malvar, M., Ferreira, A., & Pereira, V. (2007). Temporal and spatial variations in topsoil water repellency throughout a crop-rotation cycle on sandy soil in north-central Portugal. Hydrological Processes, 21(17), pp. 2317-2324. doi:10.1002/hyp.6756

Doerr, Stefan, J.J Keizer, S.H Doerr, M.C Malvar, A.J.D Ferreira, and V.M.F.G Pereira. "Temporal and Spatial Variations in Topsoil Water Repellency Throughout a Crop-rotation Cycle On Sandy Soil in North-central Portugal." Hydrological Processes 21, no. 17 (2007): 2317-2324.

Doerr, Stefan, et al. "Temporal and Spatial Variations in Topsoil Water Repellency Throughout a Crop-rotation Cycle On Sandy Soil in North-central Portugal." Hydrological Processes 21.17 (2007): 2317-2324.