DETTER, C.; REICHENSPURNER, H.; BOEHM, D. H.; THALHAMMER, M.; RAPTIS, P.; SCHÜTZ, A.; REICHART, B. Minimally Invasive Direct Coronary Artery Bypass Grafting (MIDCAB) and Off-Pump Coronary Artery Bypass Grafting (OPCAB): Two Techniques for Beating Heart Surgery. The Heart Surgery Forum, v. 5, n. 2, p. E157-E162, 1 Jun. 2002.