[1. Böttcher, M., Lange, W. (1987). Untersuchen am arteriellen Gefäßsystem des Eberhodens. Archiv für Experimentelle Veterinärmedizin, Leipzig. 41, 58-64.]Search in Google Scholar
[2. Cartee, R.E., Powe, T.A., Gray, B.W., Hudson, R.S., Kuhlers, D.L. (1986). Ultrasonographic evaluation of normal boar testicles. Am J Vet Res. 47, 2543-2548.]Search in Google Scholar
[3. Clark, S.G., Schaeffer, D.J., Althouse, G.C. (2003). B-mode ultrasonographic evaluation of paired testicular diameter of mature boars in relation to average total sperm numbers. Theriogenology. 60, 1011-1023.10.1016/S0093-691X(03)00127-4]Search in Google Scholar
[4. Finko, D.R. (1974). Biopsy of the testicle. Vet. Clin. North. Am. 4, 377-381.10.1016/S0091-0279(74)50037-1]Search in Google Scholar
[5. Galina, C.S. (1971). An evaluation of testicular biopsy in farm animals. Vet Rec. 88, 628-631.10.1136/vr.88.24.628]Search in Google Scholar
[6. Hall, L.B., Kluge, J.P., Evans, L.E., Clark, T.L., Hill, H.T. (1984). Testicular Changes Observed in Boars Following Experimental Inoculation with Pseudorabies (Aujesky’s) Virus. Can J Comp Med. 48, 303-307.]Search in Google Scholar
[7. Kiernan, J.A. (2008). Histological staining in one or two colours. In: Histological and Histochemical Methods. Theory and Practice. 4th ed.(pp. 141-174). UK: Scion Publishing, Ltd.]Search in Google Scholar
[8. Leme, D.P., Papa, F.O. (2010). How to Perform and Interpret Testicular Fine Needle Aspiration in Stallions. JEVS. 590-596.10.1016/j.jevs.2010.09.003]Search in Google Scholar
[9. Lopate, C., Threlfall, W.R., Rosol, T.J. (1989). Histopathologic and gross effects of testicular biopsy in the dog . Theriogenology. 32, 585-602.10.1016/0093-691X(89)90280-X]Search in Google Scholar
[10. Lunstra, D.D., Echternkamp, S.E. (1988). Repetitive testicular biopsy in the ram during pubertal development. Theriogenology. 29, 803-810.10.1016/0093-691X(88)90217-8]Search in Google Scholar
[11. Nyland, T.G., Matton, J.S. (2002). Small Animal Diagnostic Ultrasound. 2nd ed. (pp. 259-263). Saunders.]Search in Google Scholar
[12. Roset, J.F., Faber, N.F. (2007). Testicular biopsy. In: Current therapy in equine reproduction. (pp. 205-209). Saunders Elsevier.]Search in Google Scholar
[13. Threfall, W.R., Lopate C. (1993). Testicular biopsy. In: A.O. McKinnon, J. L. Voss (Eds.), Equine reproduction. (pp. 943-949). Philadelphia: Lea & Fabiger.]Search in Google Scholar