1. Hjartsmissbildningen hos djuren;LILLEENGEN;Skand. Vet. Tidskr.,1934
2. Congenital cardiac anomalies in animals;OLAFSON;J. Tech. Meth. Bull. Med. Mus.,1939
3. Missbildungen des Herzens bei Tieren;GODGLÜCK;Deut. Tierärztl. Wochschr.,1962
4. DETWEILER , D. K. 1958 Perspectives in canine cardiology. Univ. Pennsylvania Vet. Ext. Quart. No. 149. 27 48
5. The prevalence of spontaneously occurring cardiovascular disease in dogs;DETWEILER;Am. J. Public Health,1961