@inbook{303ae30fe068426b9470bd55d9729985,
title = "Empirical nitrogen critical loads for natural and semi-natural ecosystems: 2002 update.",
keywords = "Plant biology (Botany), Life sciences, Biologie/Milieukunde (BIOL)",
author = "R. Bobbink and M. Ashmore and S. Braun and W Fluckiger and {van den Wyngaert}, I.J.J.",
year = "2003",
language = "Undefined/Unknown",
series = "Environmental Documentation",
publisher = "Swiss Agency for Environment, Forest and Landscape SAEFL",
number = "164 Air",
pages = "43--170",
editor = "B. Achermann and R. Bobbink",
booktitle = "Empirical critical loads for nitrogen.",
}