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Koch, P.L., Phillips, D.L. Incorporating concentration dependence in stable isotope mixing models: a reply to Robbins, Hilderbrand and Farley (2002). Oecologia 133, 14–18 (2002). https://doi.org/10.1007/s00442-002-0977-6
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DOI: https://doi.org/10.1007/s00442-002-0977-6