1. Ambus, P. & S. Zechmeinster-Boltenstern, 2007. Denitrification and N-cycling. In Bothe, H., S. J. Ferguson & W. E. Newton (eds), Biology of the Nitrogen Cycle. Elsevier B.V, Amsterdam: 343–358.
2. APHA AWWA WEF, 2005a. Standard Methods for the Examination of Water and Wastewater; 4500-NO2 Pages 4-118–4-119, 21st ed. American Public Health Association, Washington, D.C.
3. APHA AWWA WEF, 2005b. Standard Methods for the Examination of Water and Wastewater; 4500-NH3 Page 4-114, 21st ed. American Public Health Association, Washington, D.C.
4. Brookes, P. C., A. Landman, G. Pruden & D. S. Jenkinson, 1985. Chloroform fumigation and the release of soil nitrogen: a rapid direct extraction method to measure microbial biomass nitrogen in soil. Soil Biology and Biochemistry 17(6): 837–842.
5. Boz, B. & B. Gumiero, 2008, River Restoration integrated actions to reduce river Zero nitrate input to Venice Lagoon. In Gumiero, Rinaldi & Fokkens (eds) In 4th ECRR Conference on River Restoration, p. 1074. Proceedings.