Mangnall M.J., Crowe T.M. 2002. Population dynamics and the physical and financial impacts to cereal crops of the Egyptian Goose Alopochen aegyptiacus on the Agulhas Plain, Western Cape, South Africa. Agriculture, ecosystems & environment, 90: 231–246.

Mangnall M.J., Crowe T.M. 2002. Population dynamics and the physical and financial impacts to cereal crops of the Egyptian Goose Alopochen aegyptiacus on the Agulhas Plain, Western Cape, South Africa. Agriculture, ecosystems & environment, 90: 231–246.