1. The ultrastructure of spermatozoa of african buffalo (Syncerus caffer) in the Kruger National Park;Ackerman;Anim. Reprod. Sci.,1994
2. A scanning electron microscopic study of impala (Aepyceros melampus) sperm from the Kruger National Park;Ackerman;Koedoe,1996
3. A transmission electron microscopic study of impala (Aepyceros melampus) sperm from the Kruger National Park;Ackerman;Koedoe,1996
4. Transmission electron microscopic observations of flagellum abnormalities in impala (Aepyceros melampus) sperm from the Kruger National Park;Ackerman;Koedoe,1997
5. Transmission electron microscopic observations of acrosome and head abnormalities in impala (Aepyceros melampus) sperm from the Kruger National Park;Ackerman;Koedoe,1997