Parker, H., Øyvind Steifetten, G. Uren, and F. Rosell. “Use of Linear and Areal Habitat Models to Establish and Distribute Beaver Castor Fiber Harvest Quotas in Norway”. Fauna Norvegica, vol. 33, Sept. 2013, pp. 29-34, doi:10.5324/fn.v33i0.1591.