1. K.V.F. Jubb, and P.C. Kennedy (1970 ) Pathology of Domestic Animals , Vol. 1 , 2nd edn , p.492 . Academic Press, New York and London.
2. K. Nieberle, and P. Cohrs (1967 ) Textbook of the Special Pathological Anatomy of Domestic Animals , p.755 . Pergamon Press, Oxford and London.
3. Three case reports of ectopic ureters in bitches