Biewer Terrier auf der AKC-Webseite, abgerufen am 16. Juni 2014
doi.org
Ferdinand von Praun, Kaspar Matiasek, Vera Grevel, Michaele Alef, Thomas Flegel: Magnetic Resonance Imaging and pathological findings associated with necrotizing encephalitis in two Yorkshire Terriers. In: Veterinary Radiology & Ultrasound. Bd. 47, Nr. 3, 2006, ISSN1058-8183; S. 260–264, PMID 16700176, doi:10.1111/j.1740-8261.2006.00137.x.
Ferdinand von Praun, Kaspar Matiasek, Vera Grevel, Michaele Alef, Thomas Flegel: Magnetic Resonance Imaging and pathological findings associated with necrotizing encephalitis in two Yorkshire Terriers. In: Veterinary Radiology & Ultrasound. Bd. 47, Nr. 3, 2006, ISSN1058-8183; S. 260–264, PMID 16700176, doi:10.1111/j.1740-8261.2006.00137.x.
Ferdinand von Praun, Kaspar Matiasek, Vera Grevel, Michaele Alef, Thomas Flegel: Magnetic Resonance Imaging and pathological findings associated with necrotizing encephalitis in two Yorkshire Terriers. In: Veterinary Radiology & Ultrasound. Bd. 47, Nr. 3, 2006, ISSN1058-8183; S. 260–264, PMID 16700176, doi:10.1111/j.1740-8261.2006.00137.x.