| Gebauer, G; Lauf, J; May, C; Tilsner, J; Sapek, B; Sapek, A: Effects of type and amount of nitrogen fertiliser application and of liming on 15N abundance and total nitrogen concentrations in the soil and vegetation of grassland in Poland. in O. Oenema, A. Sapek: Effects of Liming and Nitrogen Fertilizer Application on Soil Acidity and Gaseous Nitrogen Oxide Emissions in Grassland Systems, Institute for Land Reclamation and Grassland Farming, Falenty, 84-95 (2000) |
| Gebauer, G; Zeller, B; Schmidt, G; May, C; Buchmann, N; Colin-Belgrand, M; Dambrine, E; Martin, F; Schulze, ED; Bottner, P: The fate of 15N-labelled nitrogen inputs to coniferous and broadleaf forests. in E.-D. Schulze: Ecological Studies No. 142, Carbon and Nitrogen Cycling in European Forest Ecosystems, Springer, 144-170 (2000) |
| May, C; Schmidt, G; Gebauer, G; Schulze, ED: The fate of 15N-ammonium and 15N-nitrate in the soil of a 140-year-old spruce (Picea abies) stand in the Fichtelgebirge (NE-Bavaria), Isotopes Environm. Health Studies, 32, 149-158 (1996), doi:10.1080/10256019608036306 -- Details |
| Schmidt, G; May, C; Gebauer, G; Schulze, ED: Uptake of [15N]ammonium and [15N]nitrate in a 140-year-old spruce stand (Picea abies) in the Fichtelgebirge (NE-Bavaria), Isotopes Environm. Health Studies, 32, 141-148 (1996), doi:10.1080/10256019608036305 -- Details |
