Chughtai, T.; Chen, L. Q.; Salasidis, G.; Nguyen, D.; Tchervenkov, C.; Morin, J. F. (November 2000). «Clips versus suture technique: is there a difference?». The Canadian Journal of Cardiology16 (11): 1403-1407. ISSN0828-282X. PMID11109037.
Chughtai, T.; Chen, L. Q.; Salasidis, G.; Nguyen, D.; Tchervenkov, C.; Morin, J. F. (November 2000). «Clips versus suture technique: is there a difference?». The Canadian Journal of Cardiology16 (11): 1403-1407. ISSN0828-282X. PMID11109037.