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Enciclopedia Astronautica |
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Vadim-Alexandru BARTOS - Soviet's international manned spaceflights |
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Espace LOLLINI - Conquette de l'espace, 21e edition, french version |
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Espace LOLLINI - Conquette de l'espace, 21st edition, english version |
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XA Space Page |
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Astrophilately - History of Manned Space Flights |
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The Astro Space Stamp Society |
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Anatoli N. BEREZOVOY - The diary |
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