1. 1973. National Weather Service river forecast system?snow accumulation and ablation model. NOAA Technical Memo. NWS. US Department of Commerce, Silver Spring.
2. Anonymous. 1980. Bodeneignungskarte der Schweiz. Grundlagen für die Raumplanung. Bundesamt für Raumplanung, Bern, Switzerland.
3. 1976. Development and application of a conceptual runoff model for Scandinavian catchments. Bulletin Series A, No. 52, University of Lund.
4. On hydrological heterogeneity — Catchment morphology and catchment response
5. BFLT. 1991. Digitales Höhenmodel RIMINI. Bundesamt für Landestopographie, Wabern, Switzerland.