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2. The Artificial Insemination of Farm Animals;Bartlett,1952
3. An improved artificial vagina for the collection of stallion and jack semen;Berliner;J Am Vet Med Assoc,1940
4. Penile paralysis in a quarter horse stallion;Carr;Cal Vet,1984
5. Catsaros E, Georgiades G, Modification du vagin artificiei du type Cambridge dans le but d’ameliorer son efficacite. In Vth congresso internazionale per le riproduzione animale me la fecondazione artificale, Trento, 1964, P 667