S. Siegrist

The mycorrhizal contribution to plant productivity, plant nutrition and soil structure in experimental grassland.

M. V. D. van der Heijden, T. Boller, R. Riedl, 2006, The New phytologist.

A Comparison of Plant and Animal Based Fertiliser for the Production of Organic Vegetable Transplants

M. Koller, T. Alföldi, S. Siegrist, 2004 .

Does organic agriculture reduce soil erodibility? The results of a long-term field study on loess in Switzerland

Paul Mäder, Lukas Pfiffner, P. Mäder, 1998 .