Jänsch, Stephan, Louise Steffens, Hubert Höfer, Franz Horak, Martina Roß-Nickoll, David Russell, Ulrich Burkhardt, Andreas Toschki, and Jörg Römbke. 2024. “State of Knowledge of Earthworm Communities in German Soils As a Basis for Biological Soil Quality”. SOIL ORGANISMS 85 (3):215–233. https://soil-organisms.org/index.php/SO/article/view/369.