1. Bardeleben , K. 1848 Über Vena azygos, hemiazygos und coronaria cordis bei Säugethieren. Arch. Anat. Physiol. 498-501
2. Atrial Septal Defect;Bedford;Brit. Heart. J.,1941
3. The Pulmonary Hemodynamic Pattern in Patients with Atrial Septal Defects before and after Closure;Blount;J. Lab. Clin. Med.,1953
4. A Case of Left Anterior (Superior) Vena Cava in the Dog;Bradley;Anat. Anz.,1902
5. Persistent Left Cranial Vena Cava in Dogs;Buchanan;Vet. Radiol.,1963