Reference

Anette Giesemann, Frieder Hofmann, Ulrich Schlechtriemen, Klaus Jung (2004): An attempt to evaluate sulphur (S) and nitrogen (N) inputs into a forest ecosystem retrospectively by means of stable N and S istope analysis in tree rings – Abhandlungen und Berichte des Naturkundemuseums Görlitz – 76: 101 - 115.