(EN) R. Cargill Hall, International Academy of Astronautics e American Astronautical Society, History of rocketry and astronautics: proceedings of the third through the sixth History Symposia of the International Academy of Astronautics, Published for the American Astronautical Society by Univelt, Inc. (P.O. Box 28130, San Diego, Ca. 92128), novembre 1986, p. 25, ISBN 978-0-87703-260-1. URL consultato il 16 febbraio 2015.
«We should not fail to mention Pedro Paulet who carried out, in 1895, experiments with a liquid propellant rocket characterized by a surprising performance»
