Pistorius, J.and T. Steeger. Hazards of Pesticides to Bees - 14th International Symposium of the ICP-PR Bee Protection Group, October 23 - 25, 2019 Bern, Switzerland - Proceedings -. no. 2020, Julius-Kühn-Archiv, May 2020, doi:10.5073/jka.2020.465.000.