@article {73,
	title = {A detailed ammonia emission inventory for Denmark},
	journal = {Atmospheric Environment},
	volume = {35},
	year = {2001},
	abstract = {This paper describes the method used to create an ammonia inventory for Denmark and presents the emission factors used and their justi"cation. The total Danish emission for 1996 was 92,700 t NH4-N, with agriculture accounting for nearly 99\%. Emissions from animal manure accounted for 76\% of agricultural emissions. We conclude that there will be a continued demand for inventories based on emission factors, despite their lack of physical and chemical realism, but that they will become more complex. This will place increased demands on the statistical information available and on the knowledge of the underlying science.},
	keywords = {EPNB},
	author = {Hutchings, N. J and Sommer, S. G and Andersen, J. M and Asman, W. A. H}
}
@article {75,
	title = {Processes controlling ammonia emission from livestock slurry in the field},
	journal = {European Journal of Agronomy},
	volume = {19},
	year = {2003},
	pages = {465-486},
	abstract = {The processes of NH3 emission from field-applied slurry are reviewed and their relative importance assessed. In achieving this objective, the study served to focus on a number of features that have not previously been highlighted. These include the effect of the size of the area to which slurry is applied, the interaction between solar radiation input and wind speed, the role of the solid chemistry and the interaction between slurry NH4 and the slurry/soil cation exchange capacity (CEC). The most important processes controlling NH3 volatilisation were considered to be turbulent and molecular diffusion in the atmosphere, meteorological processes controlling evaporation and surface temperature, the ion production and buffering processes controlling the pH of the slurry/soil liquid, the solid chemistry that
determines precipitation of NH4  to slurry dry matter, the physical processes controlling the movement of slurry liquid into and within the soil, and the interaction of slurry liquid with soil CEC.},
	keywords = {EPNB},
	author = {Sommer, S. G and Genermont, S and Cellier, P and Hutchings, N. J and Olesen, J. E, Morvan, T}
}
@article {65,
	title = {Emissions of gaseous nitrogen species from manure management: A new approach},
	journal = {Environmental Pollution},
	year = {2008},
	pages = {488-497},
	abstract = {A procedure for the assessment of emissions of nitrogen (N) species (ammonia, nitrous oxide, nitric oxide, di-nitrogen) from the manure
management system is developed, which treats N pools and flows including emissions strictly according to conservation of mass criteria. As
all relevant flows in the husbandry of mammals are depicted, the methodology is considered a Tier 3 approach in IPCC terminology or a detailed
methodology in UN ECE terminology. The importance of accounting for all N species is illustrated by comparing emission estimates obtained
using this approach with those obtained from the application the present detailed/Tier 2 methodology.},
	keywords = {EPNB},
	author = {Daemmgen, U and Hutchings, N. J}
}
