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Blum, J W; Elsasser, T H; Greger, D L; Wittenberg, S; de Vries, F; Distl, O (2007). Insulin-like growth factor type-1 receptor down-regulation associated with dwarfism in Holstein calves. Domestic animal endocrinology, 33(3), pp. 245-68. New York, N.Y.: Elsevier 10.1016/j.domaniend.2006.05.007
de Vries, F; Hamann, H; Drögemüller, Cord; Distl, O (2006). Associations between prion protein genotype and type traits in East Friesian milk sheep. Veterinary record, 158(25), pp. 849-52. London: British Veterinary Association 10.1136/vr.158.25.849
