The Rocket Men, Rex HALL, David SHAYLER, Ed. Springer&Praxis

Russian Spacesuits, Isaak ABRAMOV, Ingemar SKOOG, Ed. Springer&Praxis

L'astronautique soviétique, Christian LARDIER, Ed. Armand Colin

Encyclopedia Astronautica, Mark WADE, http://www.astronautix.com

Two Sides of the Moon, Alekseï LEONOV, David SCOTT