References

  1. U. Sauro, Environmental Geology, 21(3) (1993) 115–121.
  2. A. Del Prà and L. Stevan, Tecnica Italiana, 10 (1969) 12–23.
  3. G. Gennari, M. Landi and U. Sauro, Atti XV Congr. Speleol. Naz., 1987 (1988) 369–380.
  4. A. Klimchouk, U. Sauro and M. Lanzarotto, Trans. British Cave Res. Assoc., 23(3) (1996) 11–107.
  5. K. Seidel, H. Happel and G. Graue, Contributions to Revitalization of Waters. Max Planck Institute, Krefeld-Hulserberg, Germany, 1976.
  6. R.M. Gersberg, R.A. Gearheart and I. Ives, in: D.A. Hammer, ed., Constructed Wetlands for Wastewater Treatment, Lewis Publishers Inc, Chelsea, M, USA, 1989, pp. 431–446.
  7. APAT (Agenzia per la Protezione dell’Ambiente e per i servizi Tecnici), CNR (Consiglio Nazionale delle Ricerche), IRSA (Istituto di Ricerca sulle Acque), Manual 29, 2003.
  8. H. Brix, Water Res., 24 (1990) 259–266.