1) Kusserow BK: A permanentily indwelling intracorporeal blood pump to substitutes for cardiac function. Trans Am Soc Artif Intern Organs 4: 227, 1958.
2) Akutsu T, Kolff WJ: Permanent substitutes for valves and hearts. Trans Am Soc Artif Intern Organs 4: 230, 1958.
3) Moulopoulos SD, Topaz S, Kolff WJ: Diastolic Balloon pumping (with carbon dioxide) in the aorta-a mechanical assistance of the failing circulation. Am Heart J 63: 669, 1962.