Götmark, Frank. “Responses of Nesting Meadow Pipits Anthus Pratensis and White Wagtails Motacilla Alba to a Stuffed Sparrowhawk Accipiter Nisus”. Ornis Svecica, vol. 3, no. 2, Apr. 1993, pp. 81-83, doi:10.34080/os.v3.23046.