1. Allendorf FW, Leary RF, Spruell P, Wenburg JK (2001) The problems with hybrids: setting conservation guidelines. Trends Ecol Evol 16:613–622
2. Arnold J, Humer A, Heltai M, Murariu D, Spassov N, Hackländer K (2012) Current status and distribution of golden jackals Canis aureus in Europe. Mamm Rev 42:1–11
3. Banea O (2013) Jackals in West Estonia. GOJAGE blog, 1 March 2013. http://goldenjackalaround.blogspot.com/2013/03/golden-jackal-survey-in-w-estonia.html . Accessed 13 Jan 2015
4. Banea OC, Krofel M, Červinka J, Gargarea P, Szabó L (2012) New records, first estimates of densities and questions of applied ecology for jackals in Danube Delta Biosphere Reserve and hunting terrains from Romania. Acta Zoologica Bulgarica 64:353–366
5. BirdLife International (2012) Oxyura leucocephala. The IUCN Red List of Threatened Species (Version 2014.3). http://www.iucnredlist.org . Accessed 18 Feb 2015