1. Abe, M., Hiraga, T., and Iwasa, K. 1979. A case of bovine monobrachius, J. Coll. Dairying 8: 83-87 (in Japanese with English summary).
2. Abe, M., Hiraga, T., Iwasa, K., Numata, Y., Kotani, T., and Ando, Y. 1978. A case of bovine thoracopagus. J. Coll. Dairying 7: 331-336 (in Japanese with English summary).
3. Abe, M., Shimizu, T., Hiraga, T., Iwasa, K., Takehana, K., and Kobayashi, K. 1981. A case of sternal ectopia cordis in a calf. J. Coll. Dairying 9: 101-106 (in Japanese with English summary).
4. Bankl, H. 1977. Congenital Malformations of the Heart and Great Vessels. Urban and Schwarzenberg, Baltimore.
5. Bowen, J. M., and Adrian, R. W. 1962. Ectopia cordis in cattle. J. Am. Vet. Med. Assoc. 141: 1162-1167.