Software para regresión parcial con segmento horizontal: [2]
K.J.Lenselink et al. Crop tolerance to shallow watertables. On line: [3].
Nijland, H.J. and S. El Guindy 1984. Crop yields, soil salinity and water table depth in the Nile Delta. In: ILRI Annual Report 1983, Wageningen, The Netherlands, pp. 19-29. On line: [4]
