1. Allen, R., Pereira, L.S., Raes, D., Smith, M., 1998. Crop evapotranspiration. Guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56, Rome.
2. Monte Carlo SSA: detecting irregular oscillations in the presence of coloured noise;Allen;J. Clim.,1996
3. A comprehensive surface–groundwater flow model;Arnold;J. Hydrol.,1993
4. Criteria for evaluation of watershed models;J. Irrig. Drain. Eng. (American Society of Civil Engineers Task Committee on Definition of Criteria for Evaluation of Watershed Models of the Watershed Management Committee),1993
5. Le grotte della Vallassina: inquadramento geologico e geomorfologico;Bini,1980