Häberle, S., Fuller, B. T., Nehlich, O., Van Neer, W., Schibler, J., & Hüster Plogmann, H. (2016). Inter- and intraspecies variability in stable isotope ratio values of archaeological freshwater fish remains from Switzerland (11th–19th centuries AD). Environmental Archaeology, 21(2), 119-132. doi:10.1179/1749631414Y.0000000042.