1. Permanent substitutes for valves and hearts;Akutsu;Trans Am Soc Artif Intern Organs,1958
2. Artificial hearts in the chest and the use of polyurethane for making hearts, valves and aortas;Kolff;Trans Am Soc Artif Intern Organs,1959
3. Artificial hearts inside the chest, using small electro-motors;Akutsu;Trans Am Soc Artif Intern Organs,1960
4. The piezoelectric artificial heart;Loehr;Trans Am Soc Artif Intern Organs,1964
5. The development of an electrohydraulic implantable artificial heart;Burns;Trans Am Soc Artif Intern Organs,1965