Four approaches for estimating isotope discrimination factors produce contrasting dietary estimates for bears.Published in:Ursus, 2021, v. 2021, n. 32e22, p. 1, doi. 10.2192/URSUS-D-19-00028.2By:Javornik, Jernej;Šturm, Martina Burnik;Jerina, KlemenPublication type:Article