1. Freezing of spermatozoa;Crabo,1978
2. Animal reproduction and genetics;Robinson;J. Aust. Instit. Agric. Science,1979
3. The preservation of semen in mammals;Watson,1979
4. Considerations sur la material d'insemination artificielle;Bertrand;Comptes Rendus Seances Acad. Agric. France,1980
5. Freezing of spermatozoa;Polge,1980