Importance of small fishes and invasive crayfish in otter Lutra lutra diet in an English chalk streamJ. Robert Britton, Matthew Berry, Samantha Sewell, Corina Lees and Peter ReadingKnowl. Manag. Aquat. Ecosyst., 418 (2017) 13DOI: https://doi.org/10.1051/kmae/2017004
