History of rocketry and astronautics: proceedings of the twentieth and twenty-first History Symposia of the International Academy of Astronautics, Innsbruck, Austria, 1986, Brighton, United Kingdom, 1987
Cornett Lloyd H., Hall R. Cargill, American astronautical society, International Academy of Astronautics, History Symposium of the International Academy of Astronautics, History Symposium of the International Academy of Astronautics, R. Cargill Hall, series editor | Published for the American Astronautical Society by Univelt | 1993