1. Akutsu T, Kolff WJ. Permanent substitute for valves and hearts. Am Soc Artif Intern Organs. 1958;4:230.
2. Kolff WJ, Akutsu T, Dreyer B, Norton H. Artificial heart in the chest and use of polyurcthane for making hearts, valves and aortas. Am Soc Artif Intern Organs. 1959;5:298.
3. Kolff WJ. The artificial heart: research, development or invention? Dis Chest, 1969;36:314.
4. Hiller KH, Seidel W, Kolff WJ. An electronic-mechanical control for an intrathoracic artificial heart. Am J Med Electronics. 1963;2:212.
5. Kolff WJ, Hiller K, Seidel W et al. Results obtained with artificial hearts driven by the N.A.S.A. Servomechanism and the pathologic physiology of artificial hearts. Am Soc Artif Intern Organs. 1962;8:135.