Hesthagen, Trygve, Geir H. Bolstad, and Einar Kleiven. 2018. “Distribution of Non-Native Brook Trout (Salvelinus Fontinalis) across Norwegian Waterbodies – Is It an Invasive Species?”. Fauna Norvegica 38 (January):1-8. https://doi.org/10.5324/fn.v38i0.2255.