1. 1. Banbury, M. K., Cosgrove, D. M., 3rd, Thomas, J. D., Blackstone, E. H., Rajeswaran, J., Okies, J. E. and Frater, R. M. 2002. Hemodynamic stability during 17 years of the Carpentier-Edwards aortic pericardial bioprosthesis. Ann. Thorac. Surg. 73: 1460-1465.
2. 2. Bernardes, L., Abreu, J., Soares, R., Matos, P., Ramos, J. S. and Salomao, S. 1990. Mitral prostheses with and without dysfunction: evaluation using 2-D Doppler echocardiography. Rev. Port. Cardiol. 9: 973-979.
3. 3. Boon, J. A. 1998. Manual of Veterinary Echocardiography Baltimore,Maryland, Lippincott Williams & Wilkins.
4. 4. Borger, M. A., Ivanov, J., Armstrong, S., Christie-Hrybinsky, D., Feindel, C. M. and David, T. E. 2006. Twenty-year results of the Hancock II bioprosthesis. J. Heart Valve Dis. 15: 49-55; discussion 55-46.
5. Hancock II bioprosthesis: A glance at the microscope in mid–long-term explants