1. Asman, W.A.H., 1990. Atmosfærisk ammoniak og ammonium i Danmark (Atmospheric ammonia and ammonium in Denmark). Report A18, NPo-forskning, Danish Environmental Protection Agency, Copenhagen, Denmark (in Danish).
2. Asman, W.A.H., 1992. Ammonia emission in Europe: updated emission and emission variations. Report 228471008, National Insitute of Public Health and Environmental Protection (RIVM), the Netherlands.
3. Parameterization of below-cloud scavenging of highly soluble gases under convective conditions;Asman;Atmospheric Environment,1995
4. Factors influencing local dry deposition of gases with special reference to ammonia;Asman;Atmospheric Environment,1998
5. Ammonia emission research;Asman;EUROTRAC Newsletter,1998