1. Aneja, V.P.; Murray, G.C.; Southerland, J. Atmospheric Nitrogen Compounds: Emissions, Transformation, Deposition and Assessment;EM,1998,April, 22–25.
2. Galloway, J.; Cowling, E.; Erisman, J.W.; Wisniewski, J.; Jordan, C. Optimizing Nitrogen Management in Food and Energy Production and Environmental Protection. InProceedings of the Second International Nitrogen Conference, A.A. Balkema: Potomac, MD, 2001.
3. Grennfelt, P.; Thornelof, E., Eds.Critical Loads for Nitrogen: a Workshop Report; Nord 19912:41; Nordic Council of Ministers: Copenhagen, 1992.
4. Paerl, H.W. Coastal Eutrophication in Relation to Atmospheric Nitrogen Deposition: Current Perspectives;Ophelia1995,41, 237–259.
5. Warneck, P.Chemistry of the Natural Atmosphere; International Geophysical Series 71. Academic Press: San Diego, CA, 1999.